1) A campus deli serves 350 customers over its busy lunch period from 11:30 a.m. to 1:30 p.m. A quick count of the number of customers waiting in line and being served by the sandwich makers shows that an average of 8 customers are in process at any point in time. What is the average amount of time that a customer spends in process?

2) One of the chair lifts at a ski resort unloads 1700 skiers per hour at the top of the slope. The ride from the bottom to the top takes 15 minutes. How many skiers are riding on the lift at any given time?

3) Over the course of a day, fans pour into a NASCAR venue at the rate of 8,000 people per hour. The rate at which fans leave the venue:

a) must be less than 8,000 people per hour

b) must be exactly 8,000 people per hour

c) must be more than 8,000 per hour

d) could be more or less than 8,000 people per hour.