Diana has available 160 yards of fencing and wishes to enclose a rectangular area. (a) Express the area A of the rectangle as a function of the width W of the rectangle. (b) For what value of W is the area largest? (c) What is the maximum area? (a) A(W) = (b) The area is largest for W = yards. (Simplify your answer.) (c) The maximum area is square yards. (Simplify your answer.)

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