# Section 9: Applied Optimization

Save this PDF as:

Size: px
Start display at page:

## Transcription

2 Chapter The Derivative Applied Calculus 149 Example 1 The manager of a garden store wants to build a 600 square foot rectangular enclosure on the store s parking lot in order to display some equipment. Three sides of the enclosure will be built of redwood fencing, at a cost of \$7 per running foot. The fourth side will be built of cement blocks, at a cost of \$14 per running foot. Find the dimensions of the least costly such enclosure. First, translate line by line into math and a picture: Text The manager of a garden store wants to build a 600 square foot rectangular enclosure on the store s parking lot in order to display some equipment. Translation Let x and y be the dimensions of the enclosure, with y being the length of the side made of blocks. Then: Area = A = xy = 600 Three sides of the enclosure will be built of redwood fencing, at a cost of \$7 per running foot. The fourth side will be built of cement blocks, at a cost of \$14 per running foot. Find the dimensions of the least costly such enclosure. x + y costs \$7 per foot y costs \$14 per foot So Cost = C = 7(x + y) + 14y = 14x + 1y Find x and y so that C is minimized. The objective function is the cost function, and we want to minimize it. As it stands, though, it has two variables, so we need to use the constraint equation. The constraint equation is the 600 fixed area A = xy = 600. Solve A for x to get x =, and then substitute into C: y C = y = + 1y. y y Now we have a function of just one variable, so we can find the minimum using calculus C ' = + 1 y

3 Chapter The Derivative Applied Calculus 150 C is undefined for y = 0, and C = 0 when y = 0 or y = 0. Of these three critical numbers, only y = 0 makes sense (is in the domain of the actual function) remember that y is a length, so it can t be negative, and y = 0 would mean there was no enclosure at all, so it couldn t have an area of 600 square feet. Test y = 0: (I chose the second derivative test) C '' = > 0, so this is a local minimum. y 3 Since this is the only critical point in the domain, this must be the global minimum. Going back to our constraint function, we can find that when y = 0, x = 30. The dimensions of the enclosure that minimize the cost are 0 feet by 30 feet. When trying to maximize their revenue, businesses also face the constraint of consumer demand. While a business would love to see lots of products at a very high price, typically demand decreases as the price of goods increases. In simple cases, we can construct that demand curve to allow us to maximize revenue. Example A concert promoter has found that if she sells tickets for \$50 each, she can sell 100 tickets, but for each \$5 she raises the price, 50 less people attend. What price should she sell the tickets at to maximize her revenue? We are trying to maximize revenue, and we know that and q is the quantity of tickets sold. R = pq, where p is the price per ticket, The problem provides information about the demand relationship between price and quantity - as price increases, demand decreases. We need to find a formula for this relationship. To investigate, let's calculate what will happen to attendance if we raise the price: Price, p Quantity, q You might recognize this as a linear relationship. We can find the slope for the relationship by using two points: m = = = 10. You may notice that the second step in that calculation corresponds directly to the statement of the problem: the attendance drops 50 people for every \$5 the price increases. Using the point-slope form of the line, we can write the equation relating price and quantity: q 100 = 10( p 50) Simplifying to slope-intercept form gives the demand equation q = p

4 Chapter The Derivative Applied Calculus 151 Substituting this into our revenue equation, we get an equation for revenue involving only one variable: R = pq = p( p) = 1700 p 10 p Now, we can find the maximum of this function by finding critical numbers. R = p, so R = 0 when p = 85. Using the second derivative test, R = 0 < 0, so the critical number is a local maximum. Since it's the only critical number, we can also conclude it's the global maximum. The promoter will be able to maximize revenue by charging \$85 per ticket. At this price, she will sell q = (85) = 850 tickets, generating \$7,50 in revenue. Marginal Revenue = Marginal Cost You may have heard before that profit is maximized when marginal cost and marginal revenue are equal. Now you can see why people say that! (Even though it s not completely true.) General Example 3 Suppose we want to maximize profit. Now we know what to do find the profit function, find its critical points, test them, etc. But remember that Profit = Revenue Cost. So Profit = Revenue Cost. That is, the derivative of the profit function is MR MC. Now let s find the critical points those will be where Profit = 0 or is undefined. Profit = 0 when MR MC = 0, or where MR = MC. That s where the saying comes from! Here s a more accurate way to express this: Profit has critical points when Marginal Revenue and Marginal Cost are equal. In all the cases we ll see in this class, Profit will be very well behaved, and we won t have to worry about looking for critical points where Profit is undefined. But remember that not all critical points are local max! The places where MR = MC could represent local max, local min, or neither one.

5 Chapter The Derivative Applied Calculus 15 Example 4 A company sells q ribbon winders per year at \$p per ribbon winder. The demand function for ribbon winders is given by: p = q. The ribbon winders cost \$30 apiece to manufacture, plus there are fixed costs of \$9000 per year. Find the quantity where profit is maximized. We want to maximize profit, but there isn t a formula for profit given. So let s make one. We can find a function for Revenue = pq using the demand function for p. R q = q q = 300q 0.0q ( ) ( ) We can also find a function for Cost, using the variable cost of \$30 per ribbon winder, plus the fixed cost: C q = ( ) q Putting them together, we get a function for Profit: P q = R q C q = 300q 0.0q q = 0.0q + 70q ( ) ( ) ( ) ( ) ( ) 9000 Now we have two choices. We can find the critical points of Profit by taking the derivative of P(q) directly, or we can find MR and MC and set them equal. (Naturally, you ll get the same answer either way.) I ll use MR = MC this time. MR = q MC = q = = 0.04q q = 6750 The only critical point is at q = Now we need to be sure this is a local max and not a local min. In this case, I ll look to the graph of P(q) it s a downward opening parabola, so this must be a local max. And since it s the only critical point, it must also be the global max. Profit is maximized when they sell 6750 ribbon winders.. Average Cost = Marginal Cost Average cost is minimized when average cost = marginal cost is another saying that isn t quite true; in this case, the correct statement is: Average Cost has critical points when Average Cost and Marginal Cost are equal. Let s look at a geometric argument here:

6 Chapter The Derivative Applied Calculus 153 Remember that the average cost is the slope of the diagonal line, the line from the origin to the point on the total cost curve. If you move your clear plastic ruler around, you ll see (and feel) that the slope of the diagonal line is smallest when the diagonal line just touches the cost curve when the diagonal line is actually a tangent line when the average cost is equal to the marginal cost. Example 5 The cost in dollars to produce q gift baskets is given by C ( q) q +.1q. quantity where the average cost is minimum. ( q) = Find the C 160 A( q) = = q. We could find the critical points by finding A ', or by setting q q average cost to marginal cost; I ll do the latter this time. ( q) +. q MC =. So I want to solve: q = +.q q 160 =.1q q 1600 = q q = 40 The critical point of average cost is when q = 40. Notice that we still have to confirm that the critical point is a minimum. For this, we can use the first or second derivative test on A ( q). 160 A' ( q) = +.1 q 30 A'' ( q) = > 0 3 q The second derivative is positive for all positive q, so that means this is a local min. Average cost is minimized when they produce 40 gift baskets; at that quantity, the average cost is \$10 per basket.

7 Chapter The Derivative Applied Calculus Exercises 1. (a) You have 00 feet of fencing available to construct a rectangular pen with a fence divider down the middle (see below). What dimensions of the pen enclose the largest total area? (b) If you need dividers, what dimensions of the pen enclose the largest area? (c) What are the dimensions in parts (a) and (b) if one edge of the pen borders on a river and does not require any fencing?. You have 10 feet of fencing to construct a pen with 4 equal sized stalls. If the pen is rectangular and shaped like the one below, what are the dimensions of the pen of largest area and what is that area? 3. Suppose you decide to fence the rectangular garden in the corner of your yard. Then two sides of the garden are bounded by the yard fence which is already there, so you only need to use the 80 feet of fencing to enclose the other two sides. What are the dimensions of the new garden of largest area? What are the dimensions of the rectangular garden of largest area in the corner of the yard if you have F feet of new fencing available? 4. (a) You have a 10 inch by 15 inch piece of tin which you plan to form into a box (without a top) by cutting a square from each corner and folding up the sides. How much should you cut from each corner so the resulting box has the greatest volume? (b) If the piece of tin is A inches by B inches, how much should you cut from each corner so the resulting box has the greatest volume? 5. You have a 10 inch by 10 inch piece of cardboard which you plan to cut and fold as shown to form a box with a top. Find the dimensions of the box which has the largest volume.

8 Chapter The Derivative Applied Calculus (a) You have been asked to bid on the construction of a square-bottomed box with no top which will hold 100 cubic inches of water. If the bottom and sides are made from the same material, what are the dimensions of the box which uses the least material? (Assume that no material is wasted.) (b) Suppose the box in part (a) uses different materials for the bottom and the sides. If the bottom material costs 5 per square inch and the side material costs 3 per square inch, what are the dimensions of the least expensive box which will hold 100 cubic inches of water? 7. (a) Determine the dimensions of the least expensive cylindrical can which will hold 100 cubic inches if the materials cost, 5 and 3 respectively for the top, bottom and sides. (b) How do the dimensions of the least expensive can change if the bottom material costs more than 5 per square inch? 8. You have 100 feet of fencing to build a pen in the shape of a circular sector, the "pie slice" shown. The area of such a sector is rs/. What value of r maximizes the enclosed area? 9. (a) You have been asked to determine the least expensive route for a telephone cable which connects Andersonville with Beantown. If it costs \$5000 per mile to lay the cable on land and \$8000 per mile to lay the cable across the river and the cost of the cable is negligible, find the least expensive route. (b) What is the least expensive route if the cable costs \$7000 per mile plus the cost to lay it. 10. You have been asked to determine where a water works should be built along a river between Chesterville and Denton to minimize the total cost of the pipe to the towns. (a) Assume that the same size (and cost) pipe is used to each town. (This part can be done quickly without using calculus.) (b) Assume that the pipe to Chesterville costs \$3000 per mile and to Denton it costs \$7000 per mile. 13. U.S. postal regulations state that the sum of the length and girth (distance around) of a package must be no more than 108 inches. (a) Find the dimensions of the acceptable box with a square end which has the largest volume. (b) Find the dimensions of the acceptable box which has the largest volume if its end is a rectangle twice as long as it is width. (c) Find the dimensions of the acceptable box with a circular end which has the largest volume.

9 Chapter The Derivative Applied Calculus D. Simonton claims that the "productivity levels" of people in different fields can be described as a function of their "career age" t by p(t) = e at e bt where a and b are constants which depend on the field of work, and career age is approximately 0 less than the actual age of the individual. (a) Based on this model, at what ages do mathematicians (a=.03, b=.05), geologists (a=.0, b=.04), and historians (a=.0, b=.03) reach their maximum productivity? (b) Simonton says "With a little calculus we can show that the curve ( p(t) ) maximizes at 1 t = b a ln( b a )." Use calculus to show that Simonton is correct. Note: Models of this type have uses for describing the behavior of groups, but it is dangerous and usually invalid to apply group descriptions or comparisons to individuals in the group. (Scientific Genius, by Dean Simonton, Cambridge University Press, 1988, pp ) 15. You own a small airplane which holds a maximum of 0 passengers. It costs you \$100 per flight from St. Thomas to St. Croix for gas and wages plus an additional \$6 per passenger for the extra gas required by the extra weight. The charge per passenger is \$30 each if 10 people charter your plane (10 is the minimum number you will fly), and this charge is reduced by \$1 per passenger for each passenger over 10 who goes (that is, if 11 go they each pay \$9, if 1 go they each pay \$8, etc.). What number of passengers on a flight will maximize your profits? 16. In the planning of a coffee shop, we estimate that if there is seating for between 40 and 80 people, the daily profit will be \$50 per seat. However, if the seating capacity is more than 80 places, the daily profit per seat will be decreased by \$1 for each additional seat over 80. What should the seating capacity be in order to maximize the coffee shop s total profit? 17. In the planning of a taco restaurant, we estimate that if there is seating for between 10 and 40 people, the daily profit will be \$10 per seat. However, if the seating capacity is more than 40 places, the daily profit per seat will be decreased by \$0.0 per seat. What should the seating capacity be in order to maximize the taco restaurant s total profit? 18. The total cost in dollars for Alicia to make q oven mitts is given by ( ) C q = q +.01q. (a) What is the fixed cost? (b) Find a function that gives the marginal cost. (c) Find a function that gives the average cost. (d) Find the quantity that minimizes the average cost. (e) Confirm that the average cost and marginal cost are equal at your answer to part (d). 19. Shaki makes and sells backpack danglies. The total cost in dollars for Shaki to make q danglies is given by C ( q) = 75 + q +.015q. Find the quantity that minimizes Shaki s average cost for making danglies.

### Review Sheet for Third Midterm Mathematics 1300, Calculus 1

Review Sheet for Third Midterm Mathematics 1300, Calculus 1 1. For f(x) = x 3 3x 2 on 1 x 3, find the critical points of f, the inflection points, the values of f at all these points and the endpoints,

### MA107 Precalculus Algebra Exam 2 Review Solutions

MA107 Precalculus Algebra Exam 2 Review Solutions February 24, 2008 1. The following demand equation models the number of units sold, x, of a product as a function of price, p. x = 4p + 200 a. Please write

### Section 2.4: Applications and Writing Functions

CHAPTER 2 Polynomial and Rational Functions Section 2.4: Applications and Writing Functions Setting up Functions to Solve Applied Problems Maximum or Minimum Value of a Quadratic Function Setting up Functions

### Maximum / Minimum Problems

171 CHAPTER 6 Maximum / Minimum Problems Methods for solving practical maximum or minimum problems will be examined by examples. Example Question: The material for the square base of a rectangular box

### Math 120 Final Exam Practice Problems, Form: A

Math 120 Final Exam Practice Problems, Form: A Name: While every attempt was made to be complete in the types of problems given below, we make no guarantees about the completeness of the problems. Specifically,

### A couple of Max Min Examples. 3.6 # 2) Find the maximum possible area of a rectangle of perimeter 200m.

A couple of Max Min Examples 3.6 # 2) Find the maximum possible area of a rectangle of perimeter 200m. Solution : As is the case with all of these problems, we need to find a function to minimize or maximize

### To find a maximum or minimum: Find an expression for the quantity you are trying to maximise/minimise (y, say) in terms of one other variable (x).

Maxima and minima In this activity you will learn how to use differentiation to find maximum and minimum values of functions. You will then put this into practice on functions that model practical contexts.

### Math 115 Extra Problems for 5.5

Math 115 Extra Problems for 5.5 1. The sum of two positive numbers is 48. What is the smallest possible value of the sum of their squares? Solution. Let x and y denote the two numbers, so that x + y 48.

### REVIEW SHEETS INTERMEDIATE ALGEBRA MATH 95

REVIEW SHEETS INTERMEDIATE ALGEBRA MATH 95 A Summary of Concepts Needed to be Successful in Mathematics The following sheets list the key concepts which are taught in the specified math course. The sheets

### COMPETENCY TEST SAMPLE TEST. A scientific, non-graphing calculator is required for this test. C = pd or. A = pr 2. A = 1 2 bh

BASIC MATHEMATICS COMPETENCY TEST SAMPLE TEST 2004 A scientific, non-graphing calculator is required for this test. The following formulas may be used on this test: Circumference of a circle: C = pd or

### 2.3 Maximum and Minimum Applications

Section.3 155.3 Maximum and Minimum Applications Maximizing (or minimizing) is an important technique used in various fields of study. In business, it is important to know how to find the maximum profit

### Math 018 Review Sheet v.3

Math 018 Review Sheet v.3 Tyrone Crisp Spring 007 1.1 - Slopes and Equations of Lines Slopes: Find slopes of lines using the slope formula m y y 1 x x 1. Positive slope the line slopes up to the right.

### Concavity and Overview of Curve Sketching. Calculus. Applications of Differentiations (III)

Calculus Applications of Differentiations (III) Outline 1 Concavity and Overview of Curve Sketching Concavity Curve Sketching 2 Outline 1 Concavity and Overview of Curve Sketching Concavity Curve Sketching

### Chapter 8. Quadratic Equations and Functions

Chapter 8. Quadratic Equations and Functions 8.1. Solve Quadratic Equations KYOTE Standards: CR 0; CA 11 In this section, we discuss solving quadratic equations by factoring, by using the square root property

To find a maximum or minimum: Find an expression for the quantity you are trying to maximise/minimise (y say) in terms of one other variable (x). dy Find an expression for and put it equal to 0. Solve

### Homework #9 Solutions

Homework #9 Solutions Problems All problems are worth 2 points. Section 4.3: 2, 4, 8, 32 Section 4.4: 6, 22, 24, 30 4.3.2. Indicate all critical points on the given graph. Which correspond to local maxima,

### 3.7 Optimization Problems

37 Optimization Problems Applied Maximum and Minimum Problems minimize cost maximize profit minimize waste least time Def optimization means finding where some function (model) has its greatest or smallest

### Rectangle Square Triangle

HFCC Math Lab Beginning Algebra - 15 PERIMETER WORD PROBLEMS The perimeter of a plane geometric figure is the sum of the lengths of its sides. In this handout, we will deal with perimeter problems involving

### A Detailed Price Discrimination Example

A Detailed Price Discrimination Example Suppose that there are two different types of customers for a monopolist s product. Customers of type 1 have demand curves as follows. These demand curves include

### Calculus for Business Key- Optimization Word Problems Date:

Calculus for Business Key- Optimization Word Problems Name: Date: Mixed Problem Set- Optimization 1. A box with an open top and a square base is to have a surface area of 108 square inches. Determine the

### When solving application problems, you should have some procedure that you follow (draw a diagram, define unknown values, set-up equations, solve)

When solving application problems, you should have some procedure that you follow (draw a diagram, define unknown values, set-up equations, solve) Once again when solving applied problems I will include

### Solving Geometric Applications

1.8 Solving Geometric Applications 1.8 OBJECTIVES 1. Find a perimeter 2. Solve applications that involve perimeter 3. Find the area of a rectangular figure 4. Apply area formulas 5. Apply volume formulas

### Introduction to Calculus

Introduction to Calculus Contents 1 Introduction to Calculus 3 11 Introduction 3 111 Origin of Calculus 3 112 The Two Branches of Calculus 4 12 Secant and Tangent Lines 5 13 Limits 10 14 The Derivative

### Section 3.1 Quadratic Functions and Models

Section 3.1 Quadratic Functions and Models DEFINITION: A quadratic function is a function f of the form fx) = ax 2 +bx+c where a,b, and c are real numbers and a 0. Graphing Quadratic Functions Using the

### Mathematical Modeling and Optimization Problems Answers

MATH& 141 Mathematical Modeling and Optimization Problems Answers 1. You are designing a rectangular poster which is to have 150 square inches of tet with -inch margins at the top and bottom of the poster

### Solving Quadratic Equations by Graphing. Consider an equation of the form. y ax 2 bx c a 0. In an equation of the form

SECTION 11.3 Solving Quadratic Equations b Graphing 11.3 OBJECTIVES 1. Find an ais of smmetr 2. Find a verte 3. Graph a parabola 4. Solve quadratic equations b graphing 5. Solve an application involving

### Homework from Section Find two positive numbers whose product is 100 and whose sum is a minimum.

Homework from Section 4.5 4.5.3. Find two positive numbers whose product is 100 and whose sum is a minimum. We want x and y so that xy = 100 and S = x + y is minimized. Since xy = 100, x = 0. Thus we have

### MCB4UW Optimization Problems Handout 4.6

MCB4UW Optimization Problems Handout 4.6 1. A rectangular field along a straight river is to be divided into smaller fields by one fence parallel to the river and 4 fences perpendicular to the river. Find

### SOLVING WORD PROBLEMS

SOLVING WORD PROBLEMS Word problems can be classified into different categories. Understanding each category will give be an advantage when trying to solve word problems. All problems in each category

### Algebra EOC Practice Test #4

Class: Date: Algebra EOC Practice Test #4 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. For f(x) = 3x + 4, find f(2) and find x such that f(x) = 17.

### Microeconomics Sept. 16, 2010 NOTES ON CALCULUS AND UTILITY FUNCTIONS

DUSP 11.203 Frank Levy Microeconomics Sept. 16, 2010 NOTES ON CALCULUS AND UTILITY FUNCTIONS These notes have three purposes: 1) To explain why some simple calculus formulae are useful in understanding

### 2.1 Increasing, Decreasing, and Piecewise Functions; Applications

2.1 Increasing, Decreasing, and Piecewise Functions; Applications Graph functions, looking for intervals on which the function is increasing, decreasing, or constant, and estimate relative maxima and minima.

### Exam 2 Review. 3. How to tell if an equation is linear? An equation is linear if it can be written, through simplification, in the form.

Exam 2 Review Chapter 1 Section1 Do You Know: 1. What does it mean to solve an equation? To solve an equation is to find the solution set, that is, to find the set of all elements in the domain of the

### POLYNOMIAL FUNCTIONS

POLYNOMIAL FUNCTIONS Polynomial Division.. 314 The Rational Zero Test.....317 Descarte s Rule of Signs... 319 The Remainder Theorem.....31 Finding all Zeros of a Polynomial Function.......33 Writing a

### Nonlinear Systems and the Conic Sections

C H A P T E R 11 Nonlinear Systems and the Conic Sections x y 0 40 Width of boom carpet Most intense sonic boom is between these lines t a cruising speed of 1,40 miles per hour, the Concorde can fly from

### Midterm 1 Practice Problems

Here are some things that you need to know how to do: Build functions in the context of a model and interpret things about them. Compute average and percentage rate of change. Find the equation of a line.

### Perimeter, Area, and Volume

Perimeter is a measurement of length. It is the distance around something. We use perimeter when building a fence around a yard or any place that needs to be enclosed. In that case, we would measure the

### Optimization Problems

Optimization Problems EXAMPLE 1: A farmer has 400 ft of fencing and ants to fence off a rectangular field that borders a straight river. He needs no fence along the river. What are the dimensions of the

### Filling in Coordinate Grid Planes

Filling in Coordinate Grid Planes A coordinate grid is a sstem that can be used to write an address for an point within the grid. The grid is formed b two number lines called and that intersect at the

### ECON 600 Lecture 3: Profit Maximization Π = TR TC

ECON 600 Lecture 3: Profit Maximization I. The Concept of Profit Maximization Profit is defined as total revenue minus total cost. Π = TR TC (We use Π to stand for profit because we use P for something

### Formulas for Area Area of Trapezoid

Area of Triangle Formulas for Area Area of Trapezoid Area of Parallelograms Use the formula sheet and what you know about area to solve the following problems. Find the area. 5 feet 6 feet 4 feet 8.5 feet

### Section P.9 Notes Page 1 P.9 Linear Inequalities and Absolute Value Inequalities

Section P.9 Notes Page P.9 Linear Inequalities and Absolute Value Inequalities Sometimes the answer to certain math problems is not just a single answer. Sometimes a range of answers might be the answer.

### Worksheet for Week 1: Circles and lines

Worksheet Math 124 Week 1 Worksheet for Week 1: Circles and lines This worksheet is a review of circles and lines, and will give you some practice with algebra and with graphing. Also, this worksheet introduces

### 10.1. Solving Quadratic Equations. Investigation: Rocket Science CONDENSED

CONDENSED L E S S O N 10.1 Solving Quadratic Equations In this lesson you will look at quadratic functions that model projectile motion use tables and graphs to approimate solutions to quadratic equations

### 1-4 Extrema and Average Rates of Change

Use the graph of each function to estimate intervals to the nearest 0.5 unit on which the function is increasing, decreasing, or constant. Support the answer numerically. 1. When the graph is viewed from

### 2.3 Applications of Linear Equations

2.3 Applications of Linear Equations Now that we can solve equations, what are they good for? It turns out, equations are used in a wide variety of ways in the real world. We will be taking a look at numerous

### So here s the next version of Homework Help!!!

HOMEWORK HELP FOR MATH 52 So here s the next version of Homework Help!!! I am going to assume that no one had any great difficulties with the problems assigned this quarter from 4.3 and 4.4. However, if

### 2013 MBA Jump Start Program

2013 MBA Jump Start Program Module 2: Mathematics Thomas Gilbert Mathematics Module Algebra Review Calculus Permutations and Combinations [Online Appendix: Basic Mathematical Concepts] 2 1 Equation of

### 3.3 Applications of Linear Functions

3.3 Applications of Linear Functions A function f is a linear function if The graph of a linear function is a line with slope m and y-intercept b. The rate of change of a linear function is the slope m.

476 CHAPTER 7 Graphs, Equations, and Inequalities 7. Quadratic Equations Now Work the Are You Prepared? problems on page 48. OBJECTIVES 1 Solve Quadratic Equations by Factoring (p. 476) Solve Quadratic

### TSI College Level Math Practice Test

TSI College Level Math Practice Test Tutorial Services Mission del Paso Campus. Factor the Following Polynomials 4 a. 6 8 b. c. 7 d. ab + a + b + 6 e. 9 f. 6 9. Perform the indicated operation a. ( +7y)

### MATH SOLUTIONS TO PRACTICE FINAL EXAM. (x 2)(x + 2) (x 2)(x 3) = x + 2. x 2 x 2 5x + 6 = = 4.

MATH 55 SOLUTIONS TO PRACTICE FINAL EXAM x 2 4.Compute x 2 x 2 5x + 6. When x 2, So x 2 4 x 2 5x + 6 = (x 2)(x + 2) (x 2)(x 3) = x + 2 x 3. x 2 4 x 2 x 2 5x + 6 = 2 + 2 2 3 = 4. x 2 9 2. Compute x + sin

### Economics 121b: Intermediate Microeconomics Problem Set 2 1/20/10

Dirk Bergemann Department of Economics Yale University s by Olga Timoshenko Economics 121b: Intermediate Microeconomics Problem Set 2 1/20/10 This problem set is due on Wednesday, 1/27/10. Preliminary

### Calculus 1st Semester Final Review

Calculus st Semester Final Review Use the graph to find lim f ( ) (if it eists) 0 9 Determine the value of c so that f() is continuous on the entire real line if f ( ) R S T, c /, > 0 Find the limit: lim

### Lesson 3: Area. Selected Content Standards. Translating Content Standards into Instruction

Lesson 3: Area Selected Content Standards Benchmark Assessed: M.3 Estimating, computing, and applying physical measurement using suitable units (e.g., calculate perimeter and area of plane figures, surface

### What does the number m in y = mx + b measure? To find out, suppose (x 1, y 1 ) and (x 2, y 2 ) are two points on the graph of y = mx + b.

PRIMARY CONTENT MODULE Algebra - Linear Equations & Inequalities T-37/H-37 What does the number m in y = mx + b measure? To find out, suppose (x 1, y 1 ) and (x 2, y 2 ) are two points on the graph of

### Monopoly and Monopsony Labor Market Behavior

Monopoly and Monopsony abor Market Behavior 1 Introduction For the purposes of this handout, let s assume that firms operate in just two markets: the market for their product where they are a seller) and

### Math Summer Work for Students entering Honors Geometry

Math Summer Work for Students entering Honors Geometry Complete the problems in this packet. SHOW ALL WORK and complete all work on separate sheets of paper. The work will be collected within the first

### Pre-Algebra Interactive Chalkboard Copyright by The McGraw-Hill Companies, Inc. Send all inquiries to:

Pre-Algebra Interactive Chalkboard Copyright by The McGraw-Hill Companies, Inc. Send all inquiries to: GLENCOE DIVISION Glencoe/McGraw-Hill 8787 Orion Place Columbus, Ohio 43240 Click the mouse button

### STUDENT NAME: GRADE 10 MATHEMATICS

STUENT NME: GRE 10 MTHEMTIS dministered October 2009 Name: lass: Multiple hoice Identify the choice that best completes the statement or answers the question. 1 The sides of squares can be used to form

### Managerial Economics Prof. Trupti Mishra S.J.M. School of Management Indian Institute of Technology, Bombay. Lecture - 13 Consumer Behaviour (Contd )

(Refer Slide Time: 00:28) Managerial Economics Prof. Trupti Mishra S.J.M. School of Management Indian Institute of Technology, Bombay Lecture - 13 Consumer Behaviour (Contd ) We will continue our discussion

### Tallahassee Community College PERIMETER

Tallahassee Community College 47 PERIMETER The perimeter of a plane figure is the distance around it. Perimeter is measured in linear units because we are finding the total of the lengths of the sides

### MAT 4810: Calculus. for Elementary and Middle School Teachers. Computing Derivatives & Integrals. Part III: Optimization.

November 4, 2016 can often help us find the best way do something. We must determine how some desired outcome depends on other factors. For example, the volume of a box depends on its dimensions. There

### Numerical integration of a function known only through data points

Numerical integration of a function known only through data points Suppose you are working on a project to determine the total amount of some quantity based on measurements of a rate. For example, you

Pre Cal, Unit 7, Lesson01_teacher, page 1 Transformations of quadratic functions The quadratic parent function graphs as a parabola: In the examples 1-6, begin with this parent function y = f(x) = x 2

### f'(c) f"(c) GRAPH OF f IS: f(c) EXAMPLE

4. SECOND DERIVATIVE TEST Let c be a critical value for f(). f'(c) f"(c) GRAPH OF f IS: f(c) EXAMPLE 0 + Concave upward minimum 0 - Concave downward maimum 0 0? Test does not apply 5. SECOND DERIVATIVE

### 1. What is the distance formula? Use it to find the distance between the points (5, 19) and ( 3, 7).

Precalculus Worksheet P. 1. What is the distance formula? Use it to find the distance between the points (5, 19) and ( 3, 7).. What is the midpoint formula? Use it to find the midpoint between the points

### RELEASED. Student Booklet. Math II. Fall 2014 NC Final Exam. Released Items

Released Items Public Schools of North Carolina State oard of Education epartment of Public Instruction Raleigh, North Carolina 27699-6314 Fall 2014 NC Final Exam Math II Student ooklet Copyright 2014

### WHAT IS AREA? CFE 3319V

WHAT IS AREA? CFE 3319V OPEN CAPTIONED ALLIED VIDEO CORPORATION 1992 Grade Levels: 5-9 17 minutes DESCRIPTION What is area? Lesson One defines and clarifies what area means and also teaches the concept

### Lesson 1: Introducing Circles

IRLES N VOLUME Lesson 1: Introducing ircles ommon ore Georgia Performance Standards M9 12.G..1 M9 12.G..2 Essential Questions 1. Why are all circles similar? 2. What are the relationships among inscribed

### or, put slightly differently, the profit maximizing condition is for marginal revenue to equal marginal cost:

Chapter 9 Lecture Notes 1 Economics 35: Intermediate Microeconomics Notes and Sample Questions Chapter 9: Profit Maximization Profit Maximization The basic assumption here is that firms are profit maximizing.

### 2008 AP Calculus AB Multiple Choice Exam

008 AP Multiple Choice Eam Name 008 AP Calculus AB Multiple Choice Eam Section No Calculator Active AP Calculus 008 Multiple Choice 008 AP Calculus AB Multiple Choice Eam Section Calculator Active AP Calculus

### The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION INTEGRATED ALGEBRA. Thursday, August 16, 2012 8:30 to 11:30 a.m.

INTEGRATED ALGEBRA The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION INTEGRATED ALGEBRA Thursday, August 16, 2012 8:30 to 11:30 a.m., only Student Name: School Name: Print your name

### Alg2 S4 Summative Review Determine whether the relation is a function. (0, 4), (1, 4), (2, 5), (3, 6), (4, 6)

Alg2 S4 Summative Review 15-16 1 Determine whether the relation is a function (0, 4), (1, 4), (2, 5), (3, 6), (4, 6) 2 The boiling temperature of water T (in Fahrenheit) can be modeled by the function

### Examples on Monopoly and Third Degree Price Discrimination

1 Examples on Monopoly and Third Degree Price Discrimination This hand out contains two different parts. In the first, there are examples concerning the profit maximizing strategy for a firm with market

### THE NUMBERS GAME Unit 3 of 4

1 College Guild PO Box 6448, Brunswick ME 04011 THE NUMBERS GAME Unit 3 of 4 HELPS FOR MULTIPLYING There is no great problem for multiplying as there is (in the palindromic number exercise) for addition,

### 3 e) x f) 2. Precalculus Worksheet P.1. 1. Complete the following questions from your textbook: p11: #5 10. 2. Why would you never write 5 < x > 7?

Precalculus Worksheet P.1 1. Complete the following questions from your tetbook: p11: #5 10. Why would you never write 5 < > 7? 3. Why would you never write 3 > > 8? 4. Describe the graphs below using

### Consumers face constraints on their choices because they have limited incomes.

Consumer Choice: the Demand Side of the Market Consumers face constraints on their choices because they have limited incomes. Wealthy and poor individuals have limited budgets relative to their desires.

### Homework #7 Solutions

Homework #7 Solutions Problems Bolded problems are worth 2 points. Section 3.4: 2, 6, 14, 16, 24, 36, 38, 42 Chapter 3 Review (pp. 159 162): 24, 34, 36, 54, 66 Etra Problem 3.4.2. If f () = 2 ( 3 + 5),

### Objectives. By the time the student is finished with this section of the workbook, he/she should be able

QUADRATIC FUNCTIONS Completing the Square..95 The Quadratic Formula....99 The Discriminant... 0 Equations in Quadratic Form.. 04 The Standard Form of a Parabola...06 Working with the Standard Form of a

### Monopoly. Chapter 13. Monopoly and How It Arises. Single-price Monopoly. Monopoly and Competition Compared. Price Discrimination

CHAPTER CHECKLIST Monopoly Chapter 13 1. Explain how monopoly arises and distinguish between single-price monopoly and price-discriminating monopoly. 2. Explain how a single-price monopoly determines its

### Free Response Questions Compiled by Kaye Autrey for face-to-face student instruction in the AP Calculus classroom

Free Response Questions 1969-005 Compiled by Kaye Autrey for face-to-face student instruction in the AP Calculus classroom 1 AP Calculus Free-Response Questions 1969 AB 1 Consider the following functions

### Economics 101 Fall 2013 Answers to Homework 5 Due Tuesday, November 19, 2013

Economics 101 Fall 2013 Answers to Homework 5 Due Tuesday, November 19, 2013 Directions: The homework will be collected in a box before the lecture. Please place your name, TA name and section number on

### Chapter 8. Chapter 8 Opener. Section 8.1. Big Ideas Math Green Worked-Out Solutions. Try It Yourself (p. 353) Number of cubes: 7

Chapter 8 Opener Try It Yourself (p. 5). The figure is a square.. The figure is a rectangle.. The figure is a trapezoid. g. Number cubes: 7. a. Sample answer: 4. There are 5 6 0 unit cubes in each layer.

### Algebra 1. Practice Workbook with Examples. McDougal Littell. Concepts and Skills

McDougal Littell Algebra 1 Concepts and Skills Larson Boswell Kanold Stiff Practice Workbook with Examples The Practice Workbook provides additional practice with worked-out examples for every lesson.

### 1) (-3) + (-6) = 2) (2) + (-5) = 3) (-7) + (-1) = 4) (-3) - (-6) = 5) (+2) - (+5) = 6) (-7) - (-4) = 7) (5)(-4) = 8) (-3)(-6) = 9) (-1)(2) =

Extra Practice for Lesson Add or subtract. ) (-3) + (-6) = 2) (2) + (-5) = 3) (-7) + (-) = 4) (-3) - (-6) = 5) (+2) - (+5) = 6) (-7) - (-4) = Multiply. 7) (5)(-4) = 8) (-3)(-6) = 9) (-)(2) = Division is

### GEOMETRY & INEQUALITIES. (1) State the Triangle Inequality. In addition, give an argument explaining why it should be true.

GEOMETRY & INEQUALITIES LAMC INTERMEDIATE GROUP - 2/09/14 The Triangle Inequality! (1) State the Triangle Inequality. In addition, give an argument explaining why it should be true. Given the three side

### Maximum and minimum problems. Information sheet. Think about

Maximum and minimum problems This activity is about using graphs to solve some maximum and minimum problems which occur in industry and in working life. The graphs can be drawn using a graphic calculator

### Review of Fundamental Mathematics

Review of Fundamental Mathematics As explained in the Preface and in Chapter 1 of your textbook, managerial economics applies microeconomic theory to business decision making. The decision-making tools

### Constrained Optimization: The Method of Lagrange Multipliers:

Constrained Optimization: The Method of Lagrange Multipliers: Suppose the equation p(x,) x 60x 7 00 models profit when x represents the number of handmade chairs and is the number of handmade rockers produced

### Algebra 1 Topic 10: Systems of linear equations and inequalities Student Activity Sheet 1; use with Overview

Algebra 1 Topic 10: Student Activity Sheet 1; use with Overview 1. Consider the equation y = 3x + 4. [OV, page 1] a. What can you know about the graph of the equation? Numerous answers are possible, such

### 4. Molly walked all the way around the edge of her yard. The distance she walked is the yard's

Name: Date: 1. Derrius has 24 feet of fencing to use for a rectangular dog pen. Which dimensions would give him the most room (area) for his dog? A. 1 foot by 11 feet B. 3 feet by 9 feet C. 4 feet by 8

MPM 2DI: 2010-2011 UNIT 6 QUADRATIC WORD PROBLEMS Date Pages Text Title Practice Day 3: Tue Feb 22 Day 4: Wed Feb 23 2-3 Quadratic Word Problems Handout Day 1: Thu Feb 24 Day 2: Fri Feb 25 4-5 4.6 Quadratic

### -axis -axis. -axis. at point.

Chapter 5 Tangent Lines Sometimes, a concept can make a lot of sense to us visually, but when we try to do some explicit calculations we are quickly humbled We are going to illustrate this sort of thing

Introduction to Quadratic Functions The St. Louis Gateway Arch was constructed from 1963 to 1965. It cost 13 million dollars to build..1 Up and Down or Down and Up Exploring Quadratic Functions...617.2

### Key Terms: Quadratic function. Parabola. Vertex (of a parabola) Minimum value. Maximum value. Axis of symmetry. Vertex form (of a quadratic function)

Outcome R3 Quadratic Functions McGraw-Hill 3.1, 3.2 Key Terms: Quadratic function Parabola Vertex (of a parabola) Minimum value Maximum value Axis of symmetry Vertex form (of a quadratic function) Standard

### How do you compare numbers? On a number line, larger numbers are to the right and smaller numbers are to the left.

The verbal answers to all of the following questions should be memorized before completion of pre-algebra. Answers that are not memorized will hinder your ability to succeed in algebra 1. Number Basics