def hotel_cost(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):

return 14 * 40

if days >=7:

cost = cost -50

return cost

elif days <7 and >=3:

cost = cost - 20

return cost

else:

return cost

def trip_cost(city, days,spending_money):

return (hotel_cost(days) + rental_car_cost(days) + plane_ride_costs(city) + spending_money)

print trip_cost("Los Angeles",5, 600)

Indentation driving me nuts. I have tried using just spaces then tabbing. Both brought up error message as follows:

File "python", line 16

if days >=7:

^

IndentationError: unindent does not match any outer indentation level

Can someone explain where I am going wrong as pulling my hair out rather than pulling it together:>p Thanks