Equations and Inequalities

9x + 3 < 21

• x > 2

• x < 2

• x > 9

• x < 9

WRITE AN EQUATION
331 students went on a field trip. Six buses were filled and 7 students traveled in cars. How many students were in each bus?

• 331=7x+6

• 331=13x

• 331=6x+7

• 331-7=6x

10 ≥ x - 3

• x ≤ 13

• x ≥ 13

• x ≤ 7

• x ≥ 7

-8x < 48

• x < -6

• x > -6

• x < 6

• x > 6

7b - 3 < 11

• b < 2

• 84 > b

• b > 2

• b < 84

Which represents the word sentence as an inequality?
A number w is smaller than 5.

• w < 5

• w > 5

• w ≤ 5

• w ≥ 5

Solve each equation for the following variable. 
1.     x - 4 = 12

• x = 8

• x = 16

• x = -8

• x = 3

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

4x + 7 = 23

• x = 16

• x = 4

• x = 9

• x = 12

3c + 5 = 23

• c = 3

• c = 6

• c = 7

• c = 18