Question 250766
L=3W-4
W=W+1
LW=40
(3w-4)(w+1)=40
3w^2-4w+3w-4=40
3w^2-w-4-40=0
3w^2-w-44=0
(3w+11)(w-4)=0
w-4=0
w=4 ans. for the width.
4+1=5 for the new width
L=3*4-4
L=12-4
L=8
PROOF:
5*8=40
40=40