Math
posted by Anna .
the length of a rectangle is seven less than four times the width. Find the length if the area is 65 square units.

L = (4 w  7)
Lw = 65
(4w7)w = 65
4 w^2  7 w  65 = 0
( w  5 )(4 w + 13 ) = 0
w = 5
L = 4(5)  7 = 13