1. WARM UP

2. LESSON 9: EVALUATING AND COMPARING ALGEBRAIC EXPRESSIONS Expressions and Equations

3. NEW STUFF: EXPRESSIONS Vocabulary: Numeric expression : an expression containing only numbers and operations Algebraic expression : an expression with variables and/or numbers as well as operations (these can also be called variable expressions)

4. EXAMPLE 1: EVALUATING ALGEBRAIC EXPRESSIONS

5. EXAMPLE 2: EVALUATING ALGEBRAIC EXPRESSIONS WITH EXPONENTS

6. EXAMPLE 3: COMPARING ALGEBRAIC EXPRESSIONS

7. EXAMPLE 4: PHONE CHARGES A cell phone company charges a $20 monthly fee and then 45 cents per minute. How much would the company charge for 200 minutes?

8. YOUR TURN

9. CORRECTING HOMEWORK Let’s correct! Trade with a neighbor. Be kind. Hold questions to the end… this will help us get through it faster so we’ll have more time for homework. Be sure to write “C.B. _____________” with your name. Double check… If you were handed a paper that is not in black ink or pencil, hand it back to its owner… They will need to redo it.

10. HOMEWORK 1 st and 2 nd : Pg. 45-46 #1-30 3 rd : Pg. 45-46 #1-15