“It’s broken again,” said Larry. “Not again!” replied Peggy, the manager of Schafer’s German Haus restaurant. Larry was talking about the dishwasher at Schafer’s German Haus. The machine had been installed nearly 20 years ago when the restaurant had just opened. Because the restaurant had been a big success since the day it opened, the machine had gotten a lot of use. Now, it broke down frequently and that caused major problems getting enough clean glasses and dishware to the service and cook staff when the restaurant was full, as on this day. “I’ll call the repair company,” sighed Peggy. “I think you should call a dishwasher salesperson,” said Larry. Questions