Unit 3 Review

What is the first step in solving x - 2 = 2

• Add 2 to the left side

• Subtract 2 from the left side

• Add 2 to both sides

Solve the problem 2x + 10 = 50

• 10

• 20

• 30

Sierra sells books. This month she sold 683 books, which is 96 more books than she sold last month. Which equation can be used to find the number of books she sold last month?

• x + 96 = 683

• x - 96 = 683

• x + 683 = 96

Denise has $250 in her checking account. Each time she buys a bottle of water, she spends $2. If Denise buys x bottles of water, how much money will remain in her account?

• 250 - 2x

• 2 - 250x

• 250 + 2x

Solve x + 2 < 5

• x < 3

• x > 3

• x = 3

Solve. 5x + 15 = 45

• 5

• 6

• 15

Which equation would have an answer of x = 4?

• 2x = 8

• 3x = 9

• 4x = 20

Adrian currently has $500 in his savings account. He saves $10 per month. He saves the same amount each month and does not take any money out of the account. In how many months will Adrian have $700?

• 20

• 50

• 70

Damien earns money walking dogs. He charges $4.50 per walk. How many times does he need to walk dogs to earn $45?

• 5

• 9

• 10

A plumber charges an initial fee of $200 plus an hourly fee of $50. Mr Collins paid the plumber $450. How many hours did the plumber work?

• 250

• 400

• 5

• 10