Equations and Inequalities

Solve the equation:
x - 5.5 = 10.5

• x = 15.5

• x = 14.5

• x = 5

• x = 16

Judy is saving to buy a pair of shoes that cost $120. She has saved $30 and is going to save $25 a week. Which equation will show her how many weeks she must save?

• 30 + 25w = 120

• 55w = 120

• 30w + 25w = 120

• 120 + 30 = 25w

Which equation has x = 5 as the solution?

• x + 15 = 10

• 2x = 5

• 2x = 10

The price of an ice cream cone,c, is one-fourth the price of a pint, p. Which equation shows the relationship between the price of a cone and the price of a pint?

• 1/4c = p

• p = 1/4 + c

• 4c = p

• p = 4 + c

Joe has 4 less than 7 times as many toy cars as Sam. If Joe has 9 cars, which equation shows how to find the number of cars Sam has?

• 7c/9 = 4

• 7c + 4 = 9

• 7c - 4 = 9

• 7c + 9 = 4

Solve the equation:
4p = 16

• p = 12

• p = 64

• p = 3

• p = 4

Marcos wants to spend at least $80 on new shoes. He has already saved $25. How much more does he need to save?
Which inequality could be used to solve this problem?

• X -25 > 80

• X + 25 > 80

• X + 25 ≤ 80

• X + 25 ≥ 80

WRITE AN EQUATION
You bought a $5 magazine and four
erasers. You spent a total of $25. How
much did each eraser cost?

• 5+x=25

• 5+4x=25

• 5x=25

• 23-5=4x

3 less than a number

• n − 3

• 3 − n

• −3n − 3

• n + 3

½ = -⅛a

• 4

• 8

• -4

• -8