Solving and Writing Equations and Inequalities Review

2x + 5 = -17

• x = -6

• x = -12

• x = 11

• x = -11

The greatest weight a truck can carry is 1,600 pounds. The truck is loaded with a piano that weight 400 pounds and other boxes that weight 50 pounds each. Which inequality represents all possible values of x , the number of boxes that can be loaded into the truck?

• 50x + 400 ≤ 1,600

• 50x + 400 ≥ 1,600

• 400x + 50 ≤ 1,600

• 400x + 50 ≥ 1,600

What inequality does the number line graph represent?

• x ≥ 3

• x > 3

• x < -3

• x ≤ -3

Yuli solved the inequality shown below. Which describes the error that Yuli made in his work?

• Yuli did not make an error in his work.

• Yuli did not divide correctly.

• Yuli did not flip the inequality sign.

• Yuli did not combine 18 and 54 correctly.

• F

• G

• H

• J

• F

• G

• H

• J

The Rug store installs carpet for $80 plus $9.50 per square yard of carpet. The Magic Carpet charges $120 for installation and $7.50 per square yard of carpet. Write an inequality that could be used to determine the number of square yards of carpet that need to be installed for The Rug Store to charge more than The Magic Carpet.

• 80+9.50x > 120+7.50x

• 80+9.50x < 120+7.50x

• 80x+9.50 > 120x+7.50

• 80x+9.50 < 120x+7.50

• A

• B

• C

• D

• F

• G

• H

• J

• A

• B

• C

• D