https://www.codecademy.com/courses/python-beginner-P5YtY/1/4?curriculum_id=4f89dab3d788890003000096#

trip_cost('Los Angeles', 7) raised an error: sum expected at most 2 arguments, got 3

I don't understand why my code doesn't work. It gives an error that the sum is getting three arguments when I am only giving two. Can somebody please help me?

```
def hotel_cost(days):
Price_per_night = 140
Total = Price_per_night*days
return Total
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):
if days >= 7:
total = 40*days - 50
return total
elif days >= 3 and days < 7:
total = 40*days - 20
return total
else:
total = 40*days
return total
def trip_cost(city,days):
return sum(rental_car_cost(days),hotel_cost(days),plane_ride_cost(city))
```