Unit 3: Equations and Inequalities Review

Holly and Ethan decide to sell some of their books at a flea market. The booth rental costs $15, and they will sell each book for $1.50. How many books will Holly and Ethan need to sell to make a profit of EXACTLY $30?

• 10 books

• 15 books

• 20 books

• 30 books

Tags

CCSS.7.EE.B.4A

Peppy Pets charges a flat fee of $15 plus $3 per hour to keep a dog during the day. Happy Hounds charges a flat fee of $21 plus $1 per hour. For how many hours is the total fee charged by the companies the same?

• 2 hours
• 3 hours
• 4 hours
• 5 hours

Tags

CCSS.8.EE.C.8C

14p - 8 = 22 + 20p

• -5

• 5

• 30

• -30

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.A.2

Match the graph with its inequality.

• a < 11

• a > 11

• a ≤ 11

• a≥ 11

Tags

CCSS.6.EE.B.8

What inequality does the number line graph represent?

• -x + 4 ≥ -1
• -2x + 3 > -7
• -x + 1 < -4
• 2x + 3 ≥ 13

Tags

CCSS.7.EE.B.4B

Lea needs at least $240 to buy new headphones. She has already saved $30. She earns $14 per car that she washes.

What is the least number of cars she can wash to buy the headphones?

Write the inequality to the problem.

• 14x+30 ≥ 240

• 14x+30 ≤ 240

• 30x+14 ≥ 240

• 30x+14 ≤ 240

Tags

CCSS.7.EE.B.4B

9x - 7 = 5x + 5

(a)  

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

2x-28=-7x+8

(a)  

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

(a)  

Tags

CCSS.8.EE.C.7B

(a)  

Tags

CCSS.8.EE.C.7B