Mathematics

Alonso Kidd

7 October, 18:40

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. D etermine 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?