November 16 Math 102 Objective: Students will be able to evaluate algebraic expressions Aim: How do we use substitution, along with order of operations,

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November 16 Math 102 Objective: Students will be able to evaluate algebraic expressions Aim: How do we use substitution, along with order of operations, to help us evaluate expressions? Prior knowledge: In the expression, 4y + 3, what is the coefficient, the variable and the constant?

Evaluate 4y + 3, when y = 2 Replace y with 2 in the expression. 4(2) + 3 Simplify using the order of operations. What do we do first, add or multiply? 4(2) = 8 8 + 3 = 11 So, 4y + 3 = 11 when y =2

Evaluate b2 - 4, when b = 3 Replace b with 3 in the expression. Simplify using the order of operations. What do we do first, add or multiply? So,

Evaluate ,when z = 3

Independent practice: Go to page 403 and do problems 18 – 21 while Mr. Brooks stops by your desk to answer any questions. Homework: Page 404, problems 23 - 29