ok perimeter is
and length is
so now substitute L into the perimeter formula
and solve
Mr. James wanted to plant a garden that would be in the shape of a rectangle. He was given 80 feet of fencing to enclose his garden. He wants the length to be 10 feet more than twice the width. What are the dimensions, in feet, for a rectangular garden that will use exactly 80 feet of fencing?
Please, set up the equation and I will solve for x.