SOLUTION: If the area of a rectangle with width x can be represented with the expression A(x) = x(14 – x), what is the perimeter of the rectangle?

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Question 846743: If the area of a rectangle with width x can be represented with the expression A(x) = x(14 – x), what is the perimeter of the rectangle?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For a rectangle,
A=L%2AW=L%2Ax=x%2814-x%29
L=14-x
The perimeter of a rectangle is,
P=2%28L%2BW%29=2%28x%2B14-x%29=2%2814%29=28