Inequalities and Equations

Walter and Brian each have a CD collection. -The number of CDs in Walter's collection can be represented by x. -The number of CDs in Brian's collection is 3 times the number in Walter's collection. -The total number of CDs in both collections is 144. What is x, the number of CDs in Walter's collection?

• 108

• 48

• 72

• 36

What is the value of x in this equation?

2x + 2 = -52

• -25

• -27

• -56

• -50

If x = 14, which equation is true?

• 3(20 - x) = 44

• 3(12 - x) = 6

• 2(x - 3) = 22

• 2x - 3 = 22

If x = -6, which inequality is true?

• -5 - 3x > 10

• -3 - 5x < -14

• 1 - 2x > 13

• 2 - x < -3

Solve the inequality.
x + 5 ≤ 13

• x ≥ 8

• x ≥ 18

• x ≤ 8 

• x ≤ 18 

Match the graph with its inequality.

• 11 < a

• 11 > a

•  11 ≤ a

•  11 ≥ a

Pheobe has $500 in a savings account at the beginning of the summer. She wants to have at least $200 in account by the end of the summer. She withdraws $25 each week for food, clothes, and movie tickets. Write an inequality that represents Pheobe's situation.

• 200+25w ≥ 500

• 500-25w ≥ 200

• 500+25w ≤ 200

• 200-25w ≤ 500

Choose the first step in solving the following equation.
-3y - 12 = 14

• add 3 from both sides

• add 12 to both sides

• subtract 12 from both sides

-12x > 36

• x > -3

• x > 48

• x < -3

Aliyah had $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?

• 24-10=7x

• 7x- 24=10

• 7x+ 10=24

• 10+x=14