One side of a triangular garden is x feet long. the other two sides of the garden are both 5 feet less than twice the length of the first side of the garden.

part a: write a simpiflied expression for perimeter, in feet, of the garden.

a fence is placed along the entire perimeter of the triangular garden. the roll of fencing is 40 ft long.

part b: write a simplified expression to show the amount of fencing, in feet, which is left from the roll of fencing.