The length of a rectangular garden is one foot less than five times its width. The area is 18sl square feet. Find the width.

2 answers

L = 5 w - 1

A = L w = (5w-1)w

A = 5 w^2 - w = 18 of whatever sl is

5 w - 1 w - 18 = 0

w = [ 1 +/- sqrt(1+360) ]/10
= [
[ 1 +/- 19]/10
use
w = 2
then L = 9