SOLUTION: The perimeter of a rectangle is 30 feet. Write the area of the rectangle as a function of the width, x.

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Question 42969: The perimeter of a rectangle is 30 feet. Write the area of the rectangle as a function of the width, x.


Found 2 solutions by Nate, aaaaaaaa:
Answer by Nate(3500) About Me  (Show Source):
Answer by aaaaaaaa(138) About Me  (Show Source):
You can put this solution on YOUR website!
If 2x+%2B+2l+=+30, we get:
2l+=+30+-+2x, so:
l+=+15+-+x
I get area+=+x%2815-x%29