A pet hotel charges $60 per night to keep a goat. When the goat arrives, there is a mandatory $20 examination fee.

Part A: Write a function rule for the total cost T, including the mandatory examination, for a goat to stay at the hotel for n days.

Part B: How much would an 8-night stay cost?

Part C: Does a 4-night stay cost half as much as a 8-day stay since it is half the time?