Southeastern airlines's daily flight from atlanta to charlotte uses a boeing 737, with all-coach seating for 120 people. in the past, the airline has priced every seat at $138 for the one-way flight. an average of 78 passengers are on each flight. the variable cost of a filled seat is $26. aysajan eziz, the new operations manager, has decided to try a yield revenue approach, with seats priced at $81 for early bookings and at $193 for bookings within 1 week of the flight. he estimates that the airline will sell 67 seats at the lower price and 37 at the higher price. variable cost will not change.