SOLUTION: The length of a rectangular swimming pool is 2x - 1 meters, and the width is x + 2 meters. Write a polynomial A(x) that represents the area. Find A(5).

Question 323888: The length of a rectangular swimming
pool is 2x - 1 meters, and the width is x + 2 meters. Write
a polynomial A(x) that represents the area. Find A(5).
Found 2 solutions by Earlsdon, jim_thompson5910:
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
The area of a rectangle is given by:
Substitute and
Expand the right side.
Substitute
Evaluate.

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Area: A = LW

So

So the area function is

Now to find A(5), just plug in x=5 and evaluate:

So
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