Problema Solution
The length of a rectangle is 2 more than three times the width. If the area of the rectangel is 161 square feet, find the length and the width.
Answer provided by our tutors
L = 2 + 3W
A = 161 sq feet
A = LW
161 = (2+3W)W
161 = 2W + 3W^2
3W^2 + 2W - 161 =0
by solving it, will get
W = 7ft
now L = 2+3(7) = 2 + 21 = 23ft