In a survey of employees at QdobaMexican Eats, it was determined that

8 cooked food.

9 washed dishes.

18 operated the cash register.

4 cooked food and washed dishes.

5 washed dishes and operated the cash register.

3 cooked food and operated the cash register.

2 did all three jobs.

5 did none of these jobs.

a) How many Qdoba Mexican Eats employees were surveyed? Of the Qdoba Mexican Eats employees surveyed, how many

b) only cooked food?

c) only operated the cash register?

d) washed dishes and operated the cash register, but did not cook food?

e) washed dishes or operated the cash register, but did not cook food?