#### Answer

The math is below, and the graph is attached.

#### Work Step by Step

In order to find the perimeter, plug in each of the given values for s:
A) $p(3) = 4(3) = 12 $
B) $p(5) = 4(5) = 20$
C) The graph is attached.
D) In order to estimate, first draw a vertical line at s = 4.25. Then, estimate the value of p at the intersection. This value is 17. After all:
$ p(4.25) = 4(4.25) = 17$