Oops, try again. It looks like rental_car_cost returns 120 instead of the correct amount (100) for 3 days.
I did as it says to and I still can't figure this out! I've read so many topics on this and none help me! I always get error messages!
def rental_car_cost(days): return 40 * days if days >= 7: return days - 50 elif days >= 3: return days - 20