Module 3 Lesson 2.notebook

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Module 3, Lesson 2HW: • Lesson 2 Problem Set #1 def,

2 def, 3def

Do Now:

Exit Ticket from Lesson 1

AIM: Generating Equivalent Expressions

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Exit Ticket Solutions

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Homework Answers S.5

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Homework Answers S.5

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Homework Answers S.6A

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Relevant Vocabulary S.10

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Opening Exercise: S.6B

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x1 ­1

­x

(5x - 9) - (2x + 6)

Subtracting Expressions

x

x

x

x

x­1

­1

­1

­1

­1

­1

­1

­1

­1

­x

­x

­1

­1

­1

­1

­1

­1

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x1 ­1

­x

(-2x + 4) - (5x - 8)

Subtracting Expressions

­x

­x

1

1

1

1

­x

­x

­x

­x

­x1

1

1

1

1

1

1

1

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Example 1Subtracting Expressions: S.7

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Example 2Combining Expressions Vertically

S.7

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Example 3Using Expressions to Solve Problems S.8

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Example 4Expressions from Word Problems

It costs Margo a processing fee of $3 to rent a storage unit, plus $17 per month to keep her belongings in the unit. Her friend Carissa wants to store a box of her belongings in Margo's storage unit and tells her that she will pay her $1 toward the processing fee and $3 for every month that she keeps the box in storage. Write an expression in standard form that represents how much Margo will have to pay for the storage unit if Carissa contributes. Then, determine how much Margo will pay if she uses the storage unit for 6 months.

S.8

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Example 5Extending Use of the Inverse to Division S.9

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S.10

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S.11

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S.11

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S.11

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Closing:1.) Why can't we use any order, any grouping directly with subtraction and division?

2.) How can we use any order, any grouping in expressions where subtraction or division are involved?

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