1) The document contains examples of simplifying expressions using substitution and solving one-step and two-step inequalities. Expressions are simplified by substituting given values for variables. Inequalities are solved through addition, subtraction, multiplication, and division. 2) Examples include simplifying expressions like 5x when x = -8 and solving inequalities such as 6x - 8 ≥ 46 + 8 through addition and division. 3) The final example is graphing the inequality x + 5 > 10 - 5 by subtracting 5 from both sides to get x > 5.

1. Review Sheet A: Substitution and Solving Inequalities - Chapter 10

2. Simplify the following expressions using substitution. 1. 5x when x = -8 5(-8) = -40 2. x 2 when x = -9 (-9) 2 = 81

3. 3. -x 2 + 7 when x = 5 Simplify the following expressions using substitution. -(5) 2 + 7= -18 4. x 2 - 8xwhen x = -6 (-6) 2 - 8(-6)= 84

4. 5. x 2 + 4x - 1 when x = 3 Simplify the following expressions using substitution. (3) 2 + 4(3) - 1 = 20

5. Solve the following one step inequalities. 6. x - 9 > -4 + 9 +9 x > 5 7. x < -7 -3 • -3 •-3 x > 21

6. Solve the following two step inequalities. 8. 6x - 8 ≥ 46 +8 +8 6x ≥ 54 ÷6 ÷6 X ≥ 9 9. -5 ≥ -x - 6 +6 +6 1 ≥ -x ÷-1 ÷-1 -1 ≤ x

7. Graph the following inequality. 10. x + 5 > 10 -5 -5 x > 5