1. 2.5 Order of Operations Simplifying Expressions PEMDAS Parentheses, brackets, other groupings, starting with the inner most operations. Evaluate any expression with an exponent. Multiply or Divide in order from left to right. Add or Subtract in order from left to right.

2. 2.5 Order of Operations Simplify:

3. 2.5 Order of Operations Simplify:

4. 2.5 Order of Operations

6. The average monthly temperatures for a six month period in Kenora, Manitoba were 15°, 6°, -9°, -21°, -12°, and 3° (Fahrenheit). What is the average temperature for that six month period?

7. 2.6 Solving Equations: The Addition and Multiplication Properties Addition Property of Equality: Let a, b, and c represent numbers. Then, a = b and a + c = b + c are equivalent equations. a = b and a - c = b - c are equivalent equations. Also,

8. 2.6 Solving Equations: The Addition and Multiplication Properties Multiplication Property of Equality: Let a, b, and c represent numbers. Then, a = b and a · c = b · c are equivalent equations. a = b and a/c = b/c are equivalent equations. Also,

9. 2.6 Solving Equations: The Addition and Multiplication Properties Determine whether -2 is a solution of the equation:

10. 2.6 Solving Equations: The Addition and Multiplication Properties Solve the equation for y. Solve:

11. 2.6 Solving Equations: The Addition and Multiplication Properties Solve:

12. 2.6 Solving Equations: The Addition and Multiplication Properties Solve: