Question 491523
A cattle rancher has 2600 feet of fencing
that will be used to enclose a rectangular feed lot.
If one of the dimensions of the feed lot is 
x,find a formula for the area y of the feed lot (in square feet)
as a function of x.

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Perimeter = 2(length + width)
1300 = length + width
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let lenth be "x":
1300 = x + w
width = 1300-x
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Area = length * width
Area = x(1300-x)
A = 1300x - x^2
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Cheers,
Stan H.
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