Review Write eight cubed in exponential form. Evaluate 73 Evaluate (x + y)2 when x = 4 and y = 5 5 x 5 x 5 x n x n x n

Objective: the objective for today is to be able to learn the order of operations in correct order and be able to apply them to solve problems. 1.3 Order of Operations

Definitions/Order Order of Operations: solve more than one operation. Parentheses: ( ), { } Exponents: x3, x2 Multiply: x / Divide: / Add: + / Subtract: - HELPER: Parenthesis = Please Exponents = Excuse Multiply = My Divide = Dear Addition = Aunt Subtract = Sally

Evaluate 6 / 3 + 7 ¾ x 22 + 1 {(7 – 2)2 + 5} + 15 16 / 4 x 22

Evaluate 3 x 7 + 5 6 / 2 + 2 x 7 6(5 – 4)2 + 3 {10 + (42 x 2)} / 6

Grouping Symbols / Examples Kinds: Brackets { } Parenthesis ( ) Fraction bars / Do in this order!!! Note: have division need to rewrite. Ex: 4 + 5 3 - 2 Write as (4 + 5) / (3 – 2) 18 - 6 7 – 4 7 x 4 8 + 72 - 1

Sales Tax To find: Find the total cost if meal was $20 with 6% tax. Mulitply original by % Add to total Find the total cost if meal was $20 with 6% tax.

Tax, Tip-st Food bill: $12 tax: 5% Taxi fare: $42 Tax: 10% Meal: $25

Wrap up Questions /Comments Hw: text pg. 19-21, #’s: 14-38 evens, 43-46,