WARM UP Ella purchased 2 DVDs and 3

WARM UP Ella purchased 2 DVDs and 3 CDs from Tyler’s Electronics at the prices listed below. After taxes, her total cost increased by $5. 60. 1. How can you write the cost of 2 DVDs as an algebraic expression? 2. How can you write the cost of 2 DVDs and 3 CDs as an algebraic expression? 3. How can you write the cost of 2 DVDs and 3 CDs, increased by $5. 60 for taxes, as an algebraic expression?

1. How can you write the cost of 2 DVDs as an algebraic expression? • 2. How can you write the cost of 2 DVDs and 3 CDs as an algebraic expression? • 3. The cost of 2 DVDs can be written as an expression of multiplication, 2 d . The cost of 2 DVDs and 3 CDs can be written as the expression 2 d + 3 c. How can you write the cost of 2 DVDs and 3 CDs, increased by $5. 60 for taxes, as an algebraic expression? • “Increased by $5. 60 for taxes” means “to add 5. 60. ” • 2 d + 3 c + 5. 60 would represent the cost of 2 DVDs and 3 CDs increased by $5. 60.

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IDENTIFYING TERMS, FACTORS, AND COEFFICIENTS MGSE 9 -12. A. SSE. 1 Interpret expressions that represent a quantity in terms of its context. Essential Question: How can I identify terms, factors, and coefficients?

INTRODUCTION

KEY CONCEPTS

KEY CONCEPTS

KEY CONCEPTS

KEY CONCEPTS

Guided Practice Example 2 A smartphone is on sale for 25% off its list price. The sale price of the smartphone is $149. 25. What expression can be used to represent the list price of the smartphone? Identify each term, coefficient, constant, and factor of the expression described.

Guided Practice Example 3 Helen purchased 3 books from an online bookstore and received a 20% discount. The shipping cost was $10 and was not discounted. Write an expression that can be used to represent the total amount Helen paid for 3 books plus the shipping cost. Identify each term, coefficient, constant, and factor of the expression described.

Problem-Based Task: Identifying Parts of an Expression in Context Tara and two friends had dinner at a Spanish tapas restaurant that charged $6 per tapa, or appetizer. The three of them shared several tapas. The total bill included taxes of $4. 32. What are the terms, factors, and coefficients of the algebraic expression that represents the number of tapas ordered, including taxes?