1. 1-3 ALGEBRAIC EXPRESSIONS Evaluate and simplify algebraic expressions by substituting and using order of operations.

2. How to… You will need to translate words into mathematical operations. What are some words or phrases for: AdditionSubtraction MultiplicationDivision

3. Practice Ex: The product of 9 and b 9b 26 less than 12 (**when you see “less than” notice that the first number goes last) 12 - 26 You try: The quotient of 6 and 3 6 more than twice the points Two times the sum of a and b

4. Modeling a Situation You start with $20 and save $6 each week. What algebraic expression models the total amount you save? What do we know? How can we make an algebraic expression using what we know? 20 + 6w

5. Evaluate an Algebraic Expression Replace variables with values Use order of operations to simplify Ex: q + r – 15 if q = 21 and r = 18 21 + 18 -15 39 – 15 24

6. Simplifying Expressions

7. 1-4 SOLVING EQUATIONS Solve problems by writing equations.

8. Equation An equation is a statement that two expressions are equal. Equations have an equal sign, expressions do not.

9. Properties of Equality

10. Solving

11. No Solution or Identities

12. Literal Equations

13. Assignment Odds p.22 #13-21 p.30 #21-33