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
Ok so we know that the Perimeter of a rectangle is Width+Width+Length+Length
in equation form its If W=2x-5 and L=3x+9 then we can find P(x)by using substitution
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multiply the 2 in to both sets of parenthasies
Add like terms
this is your equation
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If x=4 then solve for P(x)
Perimeter = 12ft
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CHECKING ANSWER
CORRECT