1. Pleasant's Hardware buys widgets for $4.17 each, marks them up
35 percent over wholesale, and sells them at that price. Create a
mathematical model to relate widgets sold (w) to profit (p). The man-
ager asks you to determine the formula if she were to put the widgets
on sale for 25 percent off. What is your formula or mathematical
model for the sale, comparing widgets sold (s) to profit (p)?