You have 30 yards of fencing with which to make a rectangular pen. Let x be the

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You have 30 yards of fencing with which to make a rectangular pen. Let x be the length of the pen.

a. Write an expression for the width of the pen in terms of x. Then write a formula for the area y of the pen in terms of x. 

b. You want the pen to have the greatest possible area. What length and width should you use? Explain your reasoning.

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Related Book For  answer-question

Holt McDougal Larson Geometry

ISBN: 9780547315171

1st Edition

Authors: Ron Larson, Laurie Boswell, Timothy D. Kanold, Lee Stiff

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