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SOLVING INEQUALITIES #3--KEY

Directions: In the following inequalities, solve for x. Show your steps and write your answer in the space provided.

Examples: x + 11 > -5 -2x + 10 < 100

- 11 -11 - 10 -10

x > -16 -2x < 90

-2 -2

x > -45

1) 8x + 40 < 120 2) 16x + 420 > 100 3) -5x + -30 > 80

x < 10 x > -20 x < -22

4) x + 20 < 180 5) -2x + 15 > 90 6) 130 + 25x < 530

x < 160 x < -37.5 x < 16

7) -4x + 20 < 100 8) 10x + 30 > 360 9) 25 + 6x < 625

x > -20 x < 33 x < 100

10) -20x + 200 < 1,000 11) 100x + 670 > 670 12) 25 + -5x < 225

x > -40 x < 0 x > -40