The Cheyenne Hotel in Big Sky, Montana, has accumulated records of the total electrical costs of the hotel and the number of occupancy-days over the last year. An occupancy-day represents a room rented for one day. The hotels business is highly seasonal, with peaks occurring during the ski season and in the summer. Month Occupancy-Days Electrical Costs January 3,400 $ 9,536 February 4,150 $ 10,180 March 3,080 $ 9,184 April 2,230 $ 7,136 May 1,570 $ 5,024 June 1,910 $ 6,112 July 3,880 $ 9,997 August 3,8