SOLUTION: Perimeter of a rectangle. The width of a rectangular playground is 2x - 5 feet, and the length is 3x + 9 feet. Write a polynomial P(x) that represents the perimeter and then eva

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Perimeter of a rectangle. The width of a rectangular playground is 2x - 5 feet, and the length is 3x + 9 feet. Write a polynomial P(x) that represents the perimeter and then eva      Log On


   



Question 322105: Perimeter of a rectangle. The width of a rectangular playground
is 2x - 5 feet, and the length is 3x + 9 feet. Write a
polynomial P(x) that represents the perimeter and then
evaluate this perimeter polynomial if x is 4 feet
Thanks for you help
Vanessa

Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
p=2%28L%2BW%29
p=2(2x-5+3x+9)
p=2(5x+4)
p=10x+8
if x=4
then
p=48