Question

The expression (8x + 4) inches represents the perimeter of a rectangle whose width is (3x − 4) inches. Find the length of the rectangle if x = 2.

Answer 1

The length of the perimeter is 8

Explanation:

Answer 2

Length of the rectangle is 8 inches.

Explanation:

Perimeter of rectangle = 2L + 2W

(8x+4) = 2L + 2(3x-4) where x = 2

(8(2)+4) = 2L + 2(3(2)-4)

20 = 2L + 4

16 = 2L

8 = L