Below is my whole exercise, no matter what I try I keep getting the error message- that the cost for given city was calculated incorrectly.

Many thanks in advance!

```
def hotel_cost(days):
return 140 * days
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):
cost = 40 * days
if days >= 7:
return cost - 50
elif days >= 3:
return cost - 20
else:
return cost
def trip_cost(city, days ):
days = 3
return rental_car_cost(days) + hotel_cost(days) + plane_ride_cost("Tampa")
```