A restaurant compiled the following information regarding 30 of its employees. Of these? employees, 9 cooked? food, 7 washed? dishes, 19 operated the cash? register, 4 cooked food and washed? dishes, 3 cooked food and operated the cash? register, 4 washed dishes and operated the cash? register, and 2 did all three jobs How many of the employees only cooked food? (Simplify your answer.) b) How many of the employees only operated the cash register? (Simplify your answer.) c) How many of the employees washed dishes and operated the cash register but did not cook food? How many of the employees only cooked food? (Simplify your answer.) b) How many of the employees only operated the cash register? (Simplify your answer.) c) How many of the employees washed dishes and operated the cash register but did not cook food?