transportation

it says Oops, try again. It looks like rental_car_cost returns 120 instead of the correct amount (100) for 3 days.

I expected all of the days to be correct because all the math is correct

```
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):
cost = days*40
if days>=7:
cost1=cost-50
return cost1
elif days>7 and days >=3:
cost=cost - 20
return cost 20
else:
return cost
```