review sheet b substitution and solving inequalities

Review Sheet B: Substitution and

Solving Inequalities - Chapter 10

Review Sheet B: Substitution and

Solving Inequalities - Chapter 10

Simplify the following expressions using substitution.

Simplify the following expressions using substitution.1. 4x when x = -51. 4x when x = -5

4(-5) =

4(-5) =

-20-20

2. x2 when x = -72. x2 when x = -7(-7)2 =

(-7)2 =

4949

3. -x2 + 5 when x = 63. -x2 + 5 when x = 6-(6)2 + 5=-(6)2 + 5=-31-31

4. x2 - 3x when x = -94. x2 - 3x when x = -9(-9)2 - 3(-9)=(-9)2 - 3(-9)= 108108

Simplify the following expressions using

substitution.

Simplify the following expressions using

substitution.

5. x2 + 8x - 6 when x = 45. x2 + 8x - 6 when x = 4

(4)2 + 8(4) - 6 =(4)2 + 8(4) - 6 = 4242

Simplify the following expressions using substitution.

Simplify the following expressions using substitution.

Solve the following one step inequalities.

Solve the following one step inequalities.

6. x - 8 > 76. x - 8 > 7+8 +8 x > 15

7. - x < -6 3• -3 •-3

x > 18

Solve the following two step inequalities.

Solve the following two step inequalities.

8. 9x - 7 ≥ 568. 9x - 7 ≥ 56

+7 +79x ≥ 63÷9 ÷9x ≥ 7

9. 10 ≥ -x + 8- 8 - 82 ≥ -x

÷-1 ÷-1-2 ≤ x

Graph the following inequality.Graph the following inequality.

10. x + 2 > 610. x + 2 > 6-2 -2

x > 4