Question

Lisa is planning to build a rectangular deck that is 10 feet longer than it is wide. Find its width if its area is 375 square feet. Which equation models this problem?

Answer 1

If w = width, then length = w+10, then the area is given by

lw = A or
(w+10)(w) = A or
(w+10)(w) = 375 or
w² + 10w = 375