Name Period score = Notes c/b 10 50 7 th Accelerated Chapter 3 Review Part I-Write the best answer. Estimate a 20% tip for each of the bills shown. 1. $57.80 2. $122.46 Estimate a 15% tip for each of the bills shown. 3. $108.43 4. A printer is normally $129.99 but is discounted to $97.49. What percent of the original price does Hank pay? 5. Complete the table to show the interest earned for different savings principals, interest rates, and time periods. Principal Amount Saved (in dollars) Rate Time (in years) 175 2% 5 Earned (in dollars) 290 5% 43.50 510 4 81.60 3% 6 54.00 6. Products at an electronics store cost less if purchased online than in the store. The chart shows the in-store price and the online price. In-Store Price Online Price $50 $45 $75 $67.50 $100 $90 a. Does the online price vary directly with the in-store price? Explain your reasoning. b. Define the variables and write an equation to represent the relationship between the in-store price and the online price. Variables Equation c. What is the constant of proportionality? Interpret the constant of proportionality for this problem situation. d. What is the online price for a product that costs $92 in the store?
7. A realtor makes 5% commission on each sale. Show your work for b. and c. a. Define the variables and write the equation that represents the relationship between the price of a home and the commission received. Variables Equation b. How much commission will the realtor earn for selling a $150,000 home? c. If the realtor earned a $8750 commission, what was the price of the home? Part II Multiple Choice 8. One serving of almonds contains 5 grams of carbohydrates, which is 2% of the recommended daily allowance. What is the total recommended daily allowance of carbohydrates? a. 10 grams b. 40 grams c. 250 grams d. 500 grams 9. Your restaurant bill is $72.34. You want to leave about a 20% tip. Which is the best estimate of a 20% tip? a. $14.00 b. $14.40 c. $14.47 d. $14.50 10. The $199.99 digital camera Anne purchased was on sale for 15% off. What amount did Anne get off the price? a. $15 b. $20 c. $30 d. $40 11. Mrs. Jones sells houses. She gets a 5% commission on all sales. How much commission would she earn on a house that sells for $200,000? a. $5000 b. $10,000 c. $50,000 d. $100,000 12. Karen deposits $375 into a savings account which earns simple interest at a rate of 4% per year. How much interest will she have earned at the end of 5 years? a. $20 b. $75 c. $450 d. $750 13. A company spends 13% of its monthly budget on rent, which totals $2600. Which proportion can be used to calculate the company s total monthly budget? 14. A computer is normally $550 but is discounted to $385. What percent of the original price does Mark pay? a. 16.5% b. 30% c. 65% d. 70% 15. Jeans are on sale for 80% of the original price of $60. What is the sale price? a. $12 b. $24 c. $36 d. $48 16. The recommended daily allowance of fat is 65 grams. One serving of oatmeal contains 3 grams of fat. Which proportion can be used to calculate the percent of the daily recommended allowance of fat contained in one serving of oatmeal? 17. The table shows the price of several products and the amount of sales tax added to the price. How much sales tax would there be on a $300 snowboard? Cost of Sales Product Tax a. $5.00 (dollars) (dollars) 10 0.50 50 2.50
b. $7.50 c. $15.00 d. $30.00 18. Padma is buying a car. She will borrow $19,000 at a simple interest rate of 6% per year for 7 years. How much interest will she pay altogether? a. $798 b. $1140 c. $7980 d. $11,400 19. Televisions are on sale for 85% of the original price of $499. What is the sale price? a. $74.85 b. $88.06 c. $424.15 d. $587.06 20. A baseball that usually costs $65 is on sale for $55.25. What percent off is the baseball? a. 0.15% b. 0.85% c. 15% d. 85% 21. A store is having a sale with a 25% discount on all merchandise. Which equation represents the relationship between the regular cost of merchandise and the discount received, where d represents the amount discounted and r represents the regular price? 22. One serving of peanut butter contains 190 calories. What percent of a 2000-calorie diet is contained in one serving of peanut butter? a. 0.095% b. 0.105% c. 9.5% d. 10.5% 23. At Outdoor Adventures Clothing Company, all items are marked up to maximize profit. Life preservers cost $23 to buy from the manufacturer. They sell for $35. What is the percent increase on life preservers, to the nearest whole percent? a. 12% b. 34% c. 52% d. 66% 24. A sporting goods store displays the following sale sign. What is the constant of proportionality? a. 0.25 b. 0.33 c. 0.75 d. 1.75 Regular Price (dollars) Sale Price (dollars) 25 18.75 150 112.50 225 168.75 25. Last year, Ken bought a mountain bike for $460. His bike has depreciated since he bought it. It is now worth $320. What percent did the value of Ken s bike depreciate over the past year, to the nearest whole percent? a. 30% b. 44% c. 70% d. 140% 26. Your restaurant bill is $26.96. You want to leave about a 15% tip. Which is the best estimate of a 15% tip? a. $2.60 b. $2.70 c. $3.90 d. $4.05 27. Nick bought a video game for $55, which was 20% off the original price. What was the original price? a. $68.75 b. $75 c. $110 d. $275
7th accelerated chapter 3 Review Answer Section 1. ANS: The bill is about $58. So, a 20% tip would be $58 divided by 5, which is $11.60. 2. ANS: The bill is about $122. So, a 20% tip would be $122 divided by 5, which is $24.40. 3. ANS: I first rounded the bill to $108. Next, I divided $108 by 10, which is $10.80. Then, I divided this amount in half, which is $5.40. Finally I added these two amounts together to calculate a reasonable 15% tip of $16.20. 4. ANS: Hank would pay about 75% of the original price. REF: 3.2 5. ANS: Principal Amount Saved (in dollars) Rate Time (in years) Earned (in dollars) 175 2% 5 17.50 290 5% 3 43.50 510 4% 4 81.60 300 3% 6 54.00 REF: 3.4 6. ANS: a. The prices vary directly. The ratio of the online price to the in-store price is always 0.9, or 90%. Therefore, the ratios are equivalent and the two prices are directly proportional. b. Let l represent the online price and let s represent the in-store price. c. The constant of proportionality is. The 0.9 means that the online price is 90% of the in-store price.
d. A product that costs $92 in the store would cost $82.80 online. REF: 3.3 7. ANS: a. Let p represent the cost of a home and let c represent the commission the realtor earns from a sale. b. c. The commission would be $7500. The price of the home would be $175,000. REF: 3.5 8. ANS: C REF: 3.2 9. ANS: B 10. ANS: C REF: 3.2 11. ANS: B REF: 3.5 12. ANS: B REF: 3.4 13. ANS: D REF: 3.3 14. ANS: D REF: 3.2 15. ANS: D REF: 3.2 16. ANS: A REF: 3.3 17. ANS: C REF: 3.5 18. ANS: C REF: 3.4 19. ANS: C REF: 3.2 20. ANS: C REF: 3.2 21. ANS: A REF: 3.3 22. ANS: C REF: 3.2 23. ANS: C REF: 3.4 24. ANS: C REF: 3.3 25. ANS: A REF: 3.4 26. ANS: D 27. ANS: A REF: 3.2