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26 February, 02:49

Beth has 3,000 feet of fencing available to enclose a rectangular field. One side of the field lies along a river, so only three sides require fencing. (a) express the area a of the rectangle as a function of x, where x is the length of the side parallel to the river.

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  1. 26 February, 06:48
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    A (x) = (3000-x) / 2 * x

    a (x) = (1500-½x) * x

    a (x) = 1500x-½x²
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