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AFDA – Unit 8 Last Chance Review Day 12 Name _____________________________ Period ________ 1. There are 252 students on the student council at Potomac Falls High School. If there are 700 students enrolled, what percent are on the student council? 2. One day 3% of the 15 sweatshirts made at a factory were defective. How many sweatshirts were produced at the factory that day? 3. What percent would a tip be if a person left a $3.00 tip for a $18.70 taxi fare? 4. At one store, a bicycle is on sale for 20% off the original price of $240. How much money will you save by purchasing the bicycle on sale at this store. 5. A group of 4 Potomac Fall High school students go to Chick fil a for dinner. One student in the group has a coupon for 25% off on total purchase. They order 4 chicken sandwiches for $3.50, 4 large orders of waffle fries for $175 each, and 4 drinks for $1.50 each. How much would their total bill be if the sales tax was 5%? 6. Solve. Assume that y varies directly as x. a) If y = 4, when x = 2, find y when x = 16. b) If y = 9 when x = -3, find x when y = 6. 7. a) Solve. Assume that y varies inversely as x. If y = 9 when x = 7, find y when x = 2. b) f y = 4.3 when x = 12.9, find y when x = 15.8. 8. Solve. Assume y varies jointly with z and x. a) Find y when x = 4 and z – 15, if y varies jointly as x and z and y = 5 when z = 8 and x = 10. b) Find y when x = 12 and z = 2, if y varies jointly as x and z and y = 24 when z = 2 and x = 1. 9. If Mark took the $12,000 and invested it in an account paying 4% interest compounded quarterly, 𝑟 how much money would be in the account after 5 years? FV = P (1 + 𝑛)𝑛𝑡 10. Janet invested $20,000 into an account that interest was compounded continuously. How much would her investment be worth at the end of 10 years if it earned 4% interest? 11. James makes $20 per hour and works 40 hours a week. He also gets paid time and a half for overtime. He worked 14 hours overtime. a) What would James’ gross pay be for the week? b) James needs to pay state income tax of 5.5%, federal income tax of 15%, social security tax of 12%, and Medicare tax of 4%. Calculate his total net pay. 12. Find the unit price on each container of orange juice at each of the stores. Store Costco Giant Walmart Target Food Lion Size 64 oz 32 oz 24 oz 30 oz 48 oz Item Price $5.50 $2.98 $2.68 $3.12 $4.60 Unit Price