2.38 Baggage fees:An airline charges the following baggage fees: $20 for the first bag and $40 for the second. Suppose 50% of passengers have no checked luggage, 34% have only one piece of checked luggage and 16% have two pieces. We suppose a negligible portion of people check more than two bags.

a) The average baggage-related revenue per passenger is: $(please round to the nearest cent)

b) The standard deviation of baggage-related revenue is: $(please round to the nearest cent)

c) About how much revenue should the airline expect for a flight of 130 passengers? $(please round to the nearest dollar)