A farmer is enclosing a rectangular grazing space beside a stream. The space has an area...

A farmer is enclosing a rectangular grazing space beside a stream. The space has an area of 4000 square feet, with the side beside the stream left open. The amount of fencing needed is given by , where x is the length of the side parallel to the stream.

a. What is the domain of the fence function?

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b. Graph the fence function on the interval [1.250].

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c. Use the graph to determine the length of side x that gives the smallest amount of fencing.