Question 760419
Width = x
Length = 4 + 2x
Area = length * width
160 = (4 + 2x)*x
160 = 4x + 2x^2
2x^2 + 4x - 160 = 0
Divide by 2
 x^2 + 2x - 80 = 0
 (x + 10)(x - 8) = 0
x = 8
x = - 10 (no answer)
Width = 8 inches
Length = 20 inches.
Hope this helps.
:-)