1. Review Evaluate 4x2 – 16 when x = 5 {(9 – 7)2 + 5} + 26
A t-shirt company charges $15 per shirt and offers $200 off for orders higher than 50 shirts. Write and expression that represents the cost of 75 shirts. Evaluate your expression to find the cost.

3. 1.4 equations and inequalities
Objective: Students should know how to check to see if a number can be a solution to an equation or inequality. Students should be able to know what each part of an equation and inequality are.

4. Notes Equation: = sign between two expressions.
Ex: 3x + 2 = 5
Open sentence: equation with one or more variables.
Check if 2 and 3 are solutions to the problem 3x + 1 = 7

5. Check solutions Is 2, 3, and 4 a solution to 4x -2 = 10?
Is 6 a solution to
20 = 2x -8?

6. Use Mental Math to solve
X – 5 = 8
X / 7 = 3

7. Use Mental Math
24 – x = 15
X + 2 = 12
4x = 32
3x + 7 = 22

8. Information Inequality: inequality sign instead of = sign.
Signs of inequality
< less than
> greater than
≥ greater/equal to
≤ less/equal to
Solution of inequality: numbers that prove inequality.

9. Is 4 a solution to the inequality?
2x – 1 < 8
X – 3 ≥ 1

10. Check to see if solutions
X – 5 ≤ 7, when x = 12
9 + x > 13, when x = 4
4x + 1 < 8, when x = 2
X2 + 7 ≥ 10, when x = 2

11. Word Problems
School is replacing lockers. When the old ones are removed there is a space 200 inches long. Each new locker has a width of 8 in. You want to know how many new lockers will be installed. You write the equation 8x = What does the 8, x, and 200 stand for? Solve.

12. Word problems
You are budgeting for a video game system that costs $145. If you save $5 a week will you have enough money after 6 weeks? You write the inequality n ≥ What does the 5, n, and 145 stand for? Solve

13. Wrap up Questions/Comments
Hw: Text pg , #’s: 1-6, 14-19, (just solve using mental math), 38-43, 56-64, 66