Review Sheet A: Substitution and

Solving Inequalities - Chapter 10

Review Sheet A: Substitution and

Solving Inequalities - Chapter 10

Simplify the following expressions using substitution.

Simplify the following expressions using substitution.1. 5x when x = -81. 5x when x = -8

5(-8) =

5(-8) =

-40-40

2. x2 when x = -92. x2 when x = -9(-9)2 =

(-9)2 =

8181

3. -x2 + 7 when x = 53. -x2 + 7 when x = 5-(5)2 + 7=-(5)2 + 7=-18-18

4. x2 - 8xwhen x = -64. x2 - 8xwhen x = -6(-6)2 - 8(-6)=(-6)2 - 8(-6)= 8484

Simplify the following expressions using

substitution.

Simplify the following expressions using

substitution.

5. x2 + 4x - 1 when x = 35. x2 + 4x - 1 when x = 3

(3)2 + 4(3) - 1 =(3)2 + 4(3) - 1 = 2020

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 - 9 > -46. x - 9 > -4+ 9 +9 x > 5

7. x < -7 -3• -3 •-3

x > 21

Solve the following two step inequalities.

Solve the following two step inequalities.

8. 6x - 8 ≥ 468. 6x - 8 ≥ 46

+8 +86x ≥ 54÷6 ÷6X ≥ 9

9. -5 ≥ -x - 6+6 +61 ≥ -x

÷-1 ÷-1-1 ≤ x

Graph the following inequality.Graph the following inequality.

10. x + 5 > 1010. x + 5 > 10-5 -5

x > 5