Ok, so I've looked through all of my notes and throughout the text book and I cannot find how to do this problem. I'm sure it's probably pretty easy, but I just can't even figure out how to start. Here it is: Gritz-Charlston is a 300 unit luxury hotel. All rooms are occupied when the hotel charges $80 per day for a room. For every increase of x dollars in the daily room rate, there are x rooms vacant. Each occupied room costs $22 per day to service and maintain. What should the hotel charge per day in order to maximize profit? If anyone could just get me started it would be greatly appreciated.