Input Total Physical Quantity Product 2 2.828427125 3.464101615 4 4.472135955 4.898979486 5.291502622 5.656854249 6 10 6.32455532 The above table gives the number of plumbers hired by Mario Brothers Plumbing and the total number of clogs they can clean per hour. If the going hourly rate for a plumber is $40 per hour and the price of unclogging someone's plumbing system is $100, what is the optimal number of plumbers for the company to hire