2.38 Baggage fees: An airline charges the following baggage fees: $25 for the first bag and $40 for the second. Suppose 54% of passengers have no checked luggage, 28% have only one piece of checked luggage and 18% 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 140 passengers? $___ (please round to the nearest dollar)