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.

Month	Occupancy-Days	Electrical Costs
January ...	1,736	$ 4,127
February ...	1,904	$ 4,207
March ...	2,356	$ 5,083
April ...	960	$ 2,857
May ...	360	$ 1,871
June ...	744	$ 2,696
July ...	2,108	$ 4,670
August ...	2,406	$ 5,148
September ...	840	$ 2,691
October ...	124	$ 1,588
November ...	720	$ 2,454
December ...	1,364	$ 3,529

Required:

1. Using the high-low method, estimate the fixed cost of electricity per month and the variable cost of electricity per occupancy-day. Round off the fixed cost to the nearest whole dollar and the variable cost to the nearest whole cent.

2. What other factors other than occupancy-days are likely to affect the variation in electrical costs from month to month?