32 miles = 4 dollars per gallon.
32 * 5 = 160
160 miles on 20 dollars of gas.
The pool has area
.
Let
be the width of the sidewalk. Then the combined area of the pool and sidewalk is
, so that the area of the sidewalk alone is
.
We're told this area is
, so

Answer:
(x+4y)(x-4y)
Step-by-step explanation:
Since

we can see that
