How do I solve this? A rectangular yard has area 96 square feet. If the width of the yard is 4 feet less than the length, what is the perimeter? in feet, of the yard?

Area = length * width ( X for both length and width )

X(X - 4) = 96

X^2 - 4X = 96

X^2 - 4X - 96 = 0

(X + 8)(X - 12)

From this (discarding negative factor ) we see that...,

X = 12 feet

X - 4 = 8 feet

------

Perimeter = 2L + 2W

So, the perimeter is easy for you to find!