4. The business leader of a toy-making company needs to determine the number n of employees that can be hired while maintaining a certain profit P. Employee wages are W dollars per day, and each employee will make toys on average each day. Each product can be sold for S dollars and costs C dollars to produce. The dally overhead cost is H dollars. Write an
equation for profit, explaining how you obtained the equation. Then find an equation expressing the number of employees that can be hired as a function of the other variables.