SOLUTION: 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 polynomi

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 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 polynomi      Log On


   

Question 148045This question is from textbook Elementary and Intermediate Algebra
: 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. This question is from textbook Elementary and Intermediate Algebra

Found 2 solutions by checkley77, edjones:
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
P(X)2(2X-5)+2(3X+9)
P(4)=2(2*4-5)+2(3*4+9)
P(4)=2(8-5)+2(12+9)
P(4)=2*3+2*21
P(4)=6+42
P(4)=48 FEET FOR THE PERIMETER IS THE ANSWER.

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
P=2L+2w
=2(3x+9)+2(2x-5)
=6x+18+4x-10
=10x+8
.
10*4 + 8
=40+8
=48'
.
Ed