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

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2 Part I Answer all 30 questions in this part. Each correct answer will receive 2 credits. No partial credit will be allowed. Record your answers on your separate answer sheet. [60] 1 A system of equations is graphed on the set of axes below. Use this space for computations. y x The solution of this system is (1) (0,4) (3) (4,2) (2) (2,4) (4) (8,0) 2 A cell phone can receive 120 messages per minute. At this rate, how many messages can the phone receive in 150 seconds? (1) 48 (3) 300 (2) 75 (4) 18,000 3 The value of y in the equation 0.06y y 350 is (1) 500 (3) 5,000 (2) 1, (4) 18, Integrated Algebra August 12 [2]

3 4 The scatter plot shown below represents a relationship between x and y. Use this space for computations. y x This type of relationship is (1) a positive correlation (3) a zero correlation (2) a negative correlation (4) not able to be determined 5 The sum of 3x 2 5x 6 and x 2 3x 9 is (1) 2x 2 8x 15 (3) 2x 4 8x 2 3 (2) 2x 2 8x 3 (4) 4x 2 2x 15 6 Jason s part-time job pays him \$155 a week. If he has already saved \$375, what is the minimum number of weeks he needs to work in order to have enough money to buy a dirt bike for \$900? (1) 8 (3) 3 (2) 9 (4) 4 Integrated Algebra August 12 [3] [OVER]

4 7 The expression 9a 2 64b 2 is equivalent to (1) (9a 8b)(a 8b) (3) (3a 8b)(3a 8b) (2) (9a 8b)(a 8b) (4) (3a 8b)(3a 8b) Use this space for computations. 8 The scatter plot below shows the profit, by month, for a new company for the first year of operation. Kate drew a line of best fit, as shown in the diagram. Profit (in thousands of dollars) Month Using this line, what is the best estimate for profit in the 18th month? (1) \$35,000 (3) \$42,500 (2) \$37,750 (4) \$45,000 9 Which statement illustrates the additive identity property? (1) (3) 4(6 3) 4(6) 4(3) (2) (4) (4 6) 3 4 (6 3) Integrated Algebra August 12 [4]

5 10 Peter walked 8,900 feet from home to school. Use this space for computations. 1 mile 5,280 feet How far, to the nearest tenth of a mile, did he walk? (1) 0.5 (3) 1.6 (2) 0.6 (4) Is the equation A 21000(1 0.12) t a model of exponential growth or exponential decay, and what is the rate (percent) of change per time period? (1) exponential growth and 12% (2) exponential growth and 88% (3) exponential decay and 12% (4) exponential decay and 88% 12 The length of a rectangle is 15 and its width is w. The perimeter of the rectangle is, at most, 50. Which inequality can be used to find the longest possible width? (1) 30 2w 50 (3) 30 2w 50 (2) 30 2w 50 (4) 30 2w Craig sees an advertisement for a car in a newspaper. Which information would not be classified as quantitative? (1) the cost of the car (3) the model of the car (2) the car s mileage (4) the weight of the car Integrated Algebra August 12 [5] [OVER]

6 14 What are the coordinates of the vertex and the equation of the axis of symmetry of the parabola shown in the graph below? Use this space for computations. y x (1) (0,2) and y 2 (3) ( 2,6) and y 2 (2) (0,2) and x 2 (4) ( 2,6) and x 2 15 A correct translation of six less than twice the value of x is (1) 2x 6 (3) 6 2x (2) 2x 6 (4) 6 2x Integrated Algebra August 12 [6]

7 16 The rectangular prism shown below has a length of 3.0 cm, a width of 2.2 cm, and a height of 7.5 cm. Use this space for computations. 7.5 cm 2.2 cm 3.0 cm What is the surface area, in square centimeters? (1) 45.6 (3) 78.0 (2) 49.5 (4) Which set of coordinates is a solution of the equation 2x y 11? (1) ( 6, 1) (3) (0,11) (2) ( 1,9) (4) (2, 7) 18 The graph of a parabola is represented by the equation y ax 2 where a is a positive integer. If a is multiplied by 2, the new parabola will become (1) narrower and open downward (2) narrower and open upward (3) wider and open downward (4) wider and open upward Integrated Algebra August 12 [7] [OVER]

8 19 Which equation represents a line that has a slope of 3 4 and passes through the point (2,1)? (1) 3y 4x 5 (3) 4y 3x 2 (2) 3y 4x 2 (4) 4y 3x 5 Use this space for computations. 20 What is the value of 4( 6) 18 4!? (1) 1 4 (3) 12 (2) 1 4 (4) Given: A {1, 3, 5, 7, 9} B {2, 4, 6, 8, 10} C {2, 3, 5, 7} D {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} Which statement is false? (1) A B C D (3) A C {1, 2, 3, 5, 7} (2) A B C { } (4) A C {3, 5, 7} 22 Which expression is equivalent to x 18x 2x 2 2x (1) x 3 9x 2 (3) x 3 9x 2 1 (2) x 4 9x 2 (4) x 4 9x 2 1? Integrated Algebra August 12 [8]

9 23 In a given linear equation, the value of the independent variable decreases at a constant rate while the value of the dependent variable increases at a constant rate. The slope of this line is (1) positive (3) zero (2) negative (4) undefined Use this space for computations. 24 The volume of a cylindrical can is 32π cubic inches. If the height of the can is 2 inches, what is its radius, in inches? (1) 8 (3) 16 (2) 2 (4) 4 14 x 25 The expression 2 x 4 is undefined when x is (1) 14, only (3) 2 or 2 (2) 2, only (4) 14, 2, or 2 26 What is the solution of 2 x 1 x 1? 2 (1) 1 and 3 (3) 1 and 3 (2) 1 and 3 (4) 1 and 3 27 The total score in a football game was 72 points. The winning team scored 12 points more than the losing team. How many points did the winning team score? (1) 30 (3) 54 (2) 42 (4) 60 Integrated Algebra August 12 [9] [OVER]

10 28 What is the perimeter of the figure shown below, which consists of an isosceles trapezoid and a semicircle? Use this space for computations (1) 20 3π (3) 26 3π (2) 20 6π (4) 26 6π 29 The probability that it will rain tomorrow is 1 2. The probability that our team will win tomorrow s basketball game is 3 5. Which expression represents the probability that it will rain and that our team will not win the game? (1) (3) (2) (4) The formula for the volume of a pyramid is V 1 3 Bh. What is h expressed in terms of B and V? (1) h 1 3 VB (3) h 3V B (2) h V (4) h 3VB 3B Integrated Algebra August 12 [10]

11 Part II Answer all 3 questions in this part. Each correct answer will receive 2 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [6] 2 3 ( )( ) 31 State the value of the expression 7 in scientific notation. ( ) Integrated Algebra August 12 [11] [OVER]

12 x 2 4x Express the product of and 2 in simplest form. 2 x 6x 8 Integrated Algebra August 12 [12]

13 33 On the set of axes below, graph y 3 x over the interval 1 x 2. y x Integrated Algebra August 12 [13] [OVER]

14 Part III Answer all 3 questions in this part. Each correct answer will receive 3 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [9] 34 The following cumulative frequency histogram shows the distances swimmers completed in a recent swim test Number of Swimmers Distance (in yards) Based on the cumulative frequency histogram, determine the number of swimmers who swam between 200 and 249 yards. Determine the number of swimmers who swam between 150 and 199 yards. Determine the number of swimmers who took the swim test. Integrated Algebra August 12 [14]

15 35 Ashley measured the dimensions of a rectangular prism to be 6 cm by 10 cm by 1.5 cm. The actual dimensions are 5.9 cm by 10.3 cm by 1.7 cm. Determine the relative error, to the nearest thousandth, in calculating the volume of the prism. Integrated Algebra August 12 [15] [OVER]

16 36 Solve the following system of equations algebraically for all values of x and y. y x 2 2x 8 y 2x 1 Integrated Algebra August 12 [16]

17 Part IV Answer all 3 questions in this part. Each correct answer will receive 4 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [12] 37 A company is running a contest and offering a first, second, and third prize. First prize is a choice of a car or \$15,000 cash. Second prize is a choice of a motorbike, a trip to New York City, or \$2,000 cash. Third prize is a choice of a television or \$500 cash. If each prize is equally likely to be selected, list the sample space or draw a tree diagram of all possible different outcomes of first, second, and third prizes. Determine the number of ways that all three prizes selected could be cash. Determine the number of ways that none of the three prizes selected could be cash. Integrated Algebra August 12 [17] [OVER]

18 38 In right triangle ABC shown below, AC 29 inches, AB 17 inches, and m ABC 90. Find the number of degrees in the measure of angle BAC, to the nearest degree. A B C Find the length of BC to the nearest inch. Integrated Algebra August 12 [18]

19 39 On the set of axes below, graph the following system of inequalities. y x 3 5x 2y 10 State the coordinates of one point that satisfies y x 3, but does not satisfy 5x 2y 10. y x Integrated Algebra August 12 [19]

20 Integrated Algebra August 12

21 Tear Here Tear Here Scrap Graph Paper This sheet will not be scored.

22 Scrap Graph Paper This sheet will not be scored. Tear Here Tear Here

23 Reference Sheet Tear Here Tear Here Trigonometric Ratios sin A = cos A = tan A = opposite hypotenuse adjacent hypotenuse opposite adjacent 1 Area trapezoid A = h(b b 2 ) Volume cylinder V = πr 2 h Surface Area Coordinate Geometry rectangular prism cylinder Δy m = = Δx SA = 2πr 2 + 2πrh y 2 y 1 x 2 x 1 SA = 2lw + 2hw + 2lh Integrated Algebra August 12 [23]

24 INTEGRATED ALGEBRA Tear Here Tear Here Printed on Recycled Paper INTEGRATED ALGEBRA

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