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$