Question 595661
The length of a rectangle is 7 more than three times the width. the perimeter is 94 inches. find the length and width 
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Let w = width
then from "length of a rectangle is 7 more than three times the width":
3w+7 = length
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2(w + 3w+7) = 94
2(4w+7) = 94
4w+7 = 47
4w = 40
w = 10 inches (width)
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Length:
3w+7 = 3(10)+7 = 30+7 = 37 inches