Question 320894
"The length of a rectangle is 3 more than four times its width" means that {{{L=4W+3}}} and because "Its area is 115 square feet" we also know that {{{115=LW}}} (since {{{A=LW}}}). Plug in {{{L=4W+3}}} to get {{{115=(4W+3)W}}}. From here, distribute and get everything to one side. After combining like terms and simplifying, use the quadratic formula to solve for W.