The length of a rectangle is 4 more than its width. The perimeter is 40 feet. What are the length and width of the rectangle?
Hint: The perimeter of a rectangle is given by the formula P = 21 + 2w.
O The width is 12 ft and the length is 8 ft.
O The width is 7 ft and the length is 13 ft.
O The width is 13 ft and the length is 7 ft.
O The width is 8 ft and the length is 12 ft.
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