A pet hotel charges $25 per night to keep a dog. When the dog arrives, there is a mandatory $15 examination fee.

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

Part B: How much would a 6-night stay cost?

Part C: Does a 3-night stay cost half as much as a 6-day stay since it is half the time? Explain in detail!