Unit 3 Test Prep

Solve for x in the following equation: 6x-10+2x+5=-37

• 4

• 8

• -5.25

• -4

Clara goes miniature golfing. She pays $7.50  for an admission ticket and $6.25 for each round she golfs. The total amount Clara pays for admission and the number of rounds she golfs is $26.25. Which equation can be used to determine the number of rounds, x , that Clara golfs?

• 6.25x+7.50=26.25

• 6.25x-7.50=26.25

• 6.25+7.50x=26.25

• 6.25-7.50x=26.25

Solve -(-7x-7)=14

Mr. Boover rented a car for a week. He paid a flat fee of $135 plus $0.35 for each mile (m). Write an equation to find m, the miles he traveled if he paid a total of $163

• 135m + 0.35 = 163

• 135 − 0.35m = 163

• 163 − 135 = 0.35m

• 135 + 0.35m = 163

0.78(a+2)=3.9

• 7

• 7.56

• 3

• -7

6x+7=-5x-70

• -77

• -63

• -7

• 7

Ben is making miniature paintings for the annual art show.  He has already completed 19 paintings and wants to have a total of 40 paintings for the show.  He has 7 weeks to make paintings.  Which sentence can be used to find p, the average number of paintings he must complete each week to achieve his goal?  

• 7 + (p + 19) = 40

• 7p + 19 = 40

• 19p + 7 = 40

• p + 19 = 40

Charis deposited $140 into a savings account. She earned a simple interest of 3% per year. If no money was added or removed from the investment, what was the amount of interest Charis received at the end of two years?

• $4.20

• $6.00

• $8.40

• $12.60

Ella takes out a student loan for $8,400 at  simple interest rate of 10.4% per year.  How much interest will Ella owe at the end 5 years?  Assume she does not make any payments during that time.

• $4,368

• $12,768

• $14,560

• $52,416

Michael put $6,000 in a savings account.  At the end of 9 years, the account had earned $4,320 in interest.  At what annual simple interest rate did the account grow?

• 7.0%

• 8.0%

• 15.5%

• 16.5%