The cost function for the Recklus Hang gliding Service is C(x)=0.4x^2-fx+m, where f represents the average fuel cost for a customers daily excursion and m represents the monthly hanger rental. Also c represents the monthly cost in dollars of the small business where x is the number of flight excursions facilitated in that month. If 80.00 is estimated to be the average fuels cost(f), and the monthly hanger rental is 5000 what would be the cost if when 40 flights are sold in a month?