Problem number 4: 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 out for one day. The hotel's business is highly seasonal, with peaks occurring during the ski season and in the summer. Required: 1. Using the high-low method, estimate the fixed cost of electricity per month and the variable cost of electricity per occupancy-day. 2. Express the company's cost in the linear equation form Y=a+bX. 3. What other factors other than occupancy-days are likely to affect the variation in electrical costs from month to month