Suppose that you arrive at a single-teller bank to find five other customers in the bank, one being served and the other four waiting in line. you join the end of the line. if the service times are all exponential with rate μ, what is the expected amount of time you will spend in the bank

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse. a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?