SOLUTION: A good friend of yours is planning to install a new concrete walkway around his backyard swimming pool. The pool measures 25 feet long by 15 feet wide, and the width of the walkway

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Question 896044: A good friend of yours is planning to install a new concrete walkway around his backyard swimming pool. The pool measures 25 feet long by 15 feet wide, and the width of the walkway is to be the same all the way around. Your friend is trying to determine how wide to make his walkway and needs your advice.
1. Write a polynomial expression to model the square feet of concrete needed

2. Determine how much concrete is needed if the walkway is:
a.) 4 feet wide
b.) 5 feet wide
c.) 6 feet wide
1. Determine the price for #2 - parts a, b, and c given that the price per square foot of concrete is $25
2. Which sidewalk width would you recommend for your friend and why?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
I solved an example of this same form today. Look for that one and you'll find the method used, and you can handle this one the same way.

... What I mean is that the same general problem but different example is here:
A good friend of yours is planning to install a new concrete walkway around his backyard swimming pool. The pool measures 25 feet long by 15 feet wide, and the width of the walkway - http://www.algebra.com/algebra/homework/expressions/expressions.faq.question.895844.html