SOLUTION: The width of a rectangular playground is 2x-5 feet and the length is 3x+9 feet. Write a polynomial that represents the perimeter and then evaluate this perimeter polynomial if x =

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Question 207152: The width of a rectangular playground is 2x-5 feet and the length is 3x+9 feet. Write a polynomial that represents the perimeter and then evaluate this perimeter polynomial if x = 4 feet.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The width of a rectangular playground is 2x-5 feet and the length is 3x+9 feet.
Write a polynomial that represents the perimeter
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The perimeter formula:
p = 2L + 2W
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Replace L & W with given expressions
p = 2(3x+9) + 2(2x-5)
Multiply what's inside the brackets
p = 6x + 18 + 4x - 10
Combine like terms
p = 10x + 8
:
"and then evaluate this perimeter polynomial if x = 4 feet."
Replace x with 4
p = 10(4) + 8
p = 48 ft
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