1. Class Starter8-14-13 pg. 5

2. Vocabulary Variable Algebraic expression Numerical expression

3. Variable A variable is a symbol, usually a letter, that represents one or more numbers. Examples: abcxyz

4. Algebraic Expression

5. Common Operators +-x÷+-x÷

6. Numerical Expression

7. Evaluate the Numerical Expression

8. Fraction Bar

9. Use substitution to evaluate the algebraic expression. In this case, substitution means replacing the letter (variable) with a number. Evaluate4a – 3b + 1if a = 5, b = 4, c = 8

10. Evaluate each expression if m = 9, n = 2, and p = 5.