Problema Solution
Write an expression for the perimeter of a rectangle whose length is 3 more than twice its width
Answer provided by our tutors
let
l = the length of the rectangle
w = the width of the rectangle
the length is 3 more than twice its width
l = 3 + 2w
the perimeter of the rectanglel = 3 + 2w
plug l = 3 + 2w into P = 2(l + w) we get
P = 2(3 + 2w + w) = 6 + 6w