1. Chapter 1-2: Order of Operations

2. Example 1 Evaluate Expressions Evaluate each expression. ◦12 - 4 ÷ 2 ⋅ 5 ◦36 ÷ 32 + 4 ⋅ 2 - 1

3. Example 2 Grouping Symbols Evaluate each expression. a. 6(11 - 7) - 4(2 + 1) 4[(16 ÷ 2) - (4 + 2)]

4. Example 3 Fraction Bar Evaluate ◦ 3 3 ÷ 9 ◦11 - 2 2.

5. Example 4 Evaluate an Algebraic Expression Evaluate ◦(x 2 - 2zy) + y 3 if x = 8, y = 3 and z = 5.

6. Example 5 Use Algebraic Expressions Jamie has $500 to invest for 3 years. She finds a bank that will invest her money at a simple interest rate of 5%. Interest I is equal to the principle P (amount invested) times the product of the rate r as a decimal and the time t in years. ◦Write an expression that represents simple interest. ◦Find the amount of interest earned after 3 years. ◦.