1. 1.2 Algebraic Expressions and Models, p. 11
Exponent
53 = 5 ∙ 5 ∙ 5
Base
Evaluate:
1. (− 7)4
= (−7)(− 7)(− 7)(− 7)
= 2401
2. − 74
= −(7 ∙ 7 ∙ 7 ∙ 7)
= −2401

2. Order of Operations Parenthesis Exponents Multiply / Divide
Add / Subtract

3. Order of Operations Parenthesis Please Exponents Excuse My Dear
Multiply / Divide
My Dear
Add / Subtract
Aunt Sally
PEMDAS

4. Evaluate the following if a = 2, b = −3, c = 4, and d = −51) 2) 3)

5. Simplify the expressions.1) 2)

6. Total = 0.30n + 0.20(20 − n) Total = 0.30n + 4 − 0.20n
You want to purchase apples and oranges for 20 friends. Apples cost 30 cents and oranges cost 20 cents. Write an expression for the total amount that you would spend.
Apple price = 0.30
Orange price = 0.20
# of apples = n
# of oranges
= 20 − n
Total = 0.30n (20 − n)
Total = 0.30n + 4 − 0.20n
Total = 0.10n + 4 p