def hotel_cost(nights):

#hotel_cost returns 140 * nights

return 140 * (nights)

def plane_ride_cost(city):

if city == "Charlotte":

return 183

elif city == "Tampa":

return 220

elif city == "Pittsburgh":

return 222

elif city == "Los Angeles":

return 475

def rental_car_cost(days):

#rental_car_cost = $40 per day

cost = 40 * (days)

if days >= 7:

return cost - 50

elif days >= 3:

return cost - 20

return cost

def trip_cost(city, days):

return hotel_cost(days) + plane_ride_cost(city) + rental_car_cost(days) = trip_cost

print trip_cost (5, "Tampa", 5)