https://www.codecademy.com/courses/python-beginner-P5YtY/1/3?curriculum_id=4f89dab3d788890003000096

rental_car_cost returns 120 instead of 100

```
def hotel_cost (nights):
return 140 * nights
def plane_ride_cost (city):
if city == "Charlotte": # if city is "Charlotte"
return 183 #return 183
elif city == "Tampa":
return 220
elif city == "Pittsburgh":
return 222
elif city == "Los Angeles":
return 475
def rental_car_cost (days):
return 40 * days
if days >= 7:
return rental_car_cost - 50
elif days >= 3 and days < 7:
return rental_car_cost - 20
return cost
```