A manufacturer has a setup cost of $2000 for the production of a new football. The cost of labor and materials for producing each unit is $15.

(a) Write a rational expression that models the average cost per unit when x units are produced.

(b) Find the domain of the expression in part (a).

(c) Find the average cost per unit when 300 units are produced.

Review: 7.1b Mini-Quiz

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Chapter 7Rational Expressions and Equations

Lesson 7-2aMultiplying Rational Expressions

Objective: Students will learn how to multiply rational expressions.

Answer:

1 1 1

1 1 2 1 1

d 2 q

2 r 3

Find

c, d, q, and r

Answer:

1

1

1

x 2

Find

x

Find

1

1

1

1

Answer: b

Answer:

Answer:

a. Find

b. Find

n

s and k

a. Find

b. Find

Answer:

Answer:

y

c

Lesson Summary: Objective: Students will learn how to multiply rational expressions.

Preview of the next Lesson: Objective: Students will learn how to divide rational expressions. Students will solve real world word problems involving multiplying and dividing rational expressions.

Homework397+398/1-43 odd

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