Unit 3 Review-Equations, Inequalities, Interest

14. 14. The table shows the prices for different gym memberships. Which situation does the equation 50 + 65x = 75 + 55x represent?

• A

• B

• C

• D

15. 15. Which situation can be represented by the equation 100 – 2x < 140 - 6x?

• A

• B

• C

• D

17. 17. Armando compared the prices of two auto-rental agencies for the use of a mid-size auto for one week. Cheap Auto charged a flat fee of $386 plus $0.20 per mile driven. Value Car charged a flat fee of $344 plus $0.35 per mile driven. Which equation should he use to determine the distance in miles, m, that would make the total charges of both auto-rental agencies equal?

• A

• B

• C

• D

18. 18. A local bakery has a daily operating cost of $900 plus a cost of $12 per cake they make. If a cake sells for $20, which equation could be used to determine the minimum number of cakes, c, they must sell each day to earn a profit?

• A

• B

• C

• D

19. 19. Luis has five more than one third of the cards in a collector's set. Mia has ten fewer than two-thirds of the cards. If Mia and Luis have the same number of cards, how many total cards are in the set?

• A

• B

• C

• D

20. 20. Mr. Smith needs to hire a plumber to do repairs at his house. The table shows the amounts Company A and Company B charges for a service call and their hourly rate. Which inequality represents the number of hours that would make Company B more expensive than Company A?

• A

• B

• C

• D

20. 21. Joanna will deposit $1,530 in an account that earns 6% simple interest every year. Her sister Zinaya will deposit $1,500 in an account that earns 8% interest compounded annually. The deposits will be made on the same day, and no additional money will be deposited or withdrawn from the accounts. Which statement about the balances of Joanna's accounts and Zinaya's accounts at the end of the 3 years is true?

• A

• B

• C

• D