Philip P. answered • 09/16/15

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Let L and W be the length and width:

- A rectangular parking lot has a length that is 4 greater than the width;

L = W + 4

- The area of the parking lot is 672 square yards

Area = L*W

672 = L*W

Substitute W+4 in place of L:

672 = (W+4)*W

672 = W

^{2}+ 4W 0 = W

^{2}+ 4W - 672Factors to:

0 = (W+28)(W-24)

W = -28 and 24

Since we can't have a negative length,

*.***W = 24 yards***= W + 4 = 24 + 4***L***=***28 yards**

**- Phil in Olney**