Beth has 3000 feet of fencing available to enclose a rectangular field.

a) Express the area A of the rectangle as a function of x, where x is the length of the rectangle.

b) For what value of x is the area largest?

c) What is the maximum area?

I have the answer but do not know how to set up. Can someone help.

Answers

a) A(x)=-x^2 + 1500x

b) A is largest when X = 750ft.

c) 565,500 ft sq

Robert