SOLUTION: I need help in getting an answer to this problem. What formula is used. Perimeter of a rectangle. The width of a rectangular playground is 2x 5 feet, and the length is 3x 9 fee

Question 307647: I need help in getting an answer to this problem. What formula is used. 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.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
P=2(2X+5)+2(3X+9)
P=4X+20+6X+18
P=10X+38 IS THE EQUATION FOR THE PERIMETER IN TERMS OF X.
IF X=4 THEN:
X(4)=10*4+38
X(4)=40+38
X(4)=78 ANS.
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