Question 717655
AREA=LW
L=3W-8
35=(3W-8)W
35=3W^2-8W
3W^2-8W-35=0
(3W+7)(W-5)=0
W-5=0
W=5 ANS FOR THE WIDTH.
L=3*5-8
L=15-8=7 ANS. FOR THE LENGTH.
PROOF:
35=7*5
35=35