Class Starter pg. 5

Vocabulary Variable Algebraic expression Numerical expression

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

Algebraic Expression

Common Operators +-x÷+-x÷

Numerical Expression

Evaluate the Numerical Expression

Fraction Bar

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

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