Canyon Dental Services is a specialized dental practice whose only service is filling cavities. Canyon has recorded the following for the past nine months:

Month	Number of Cavities Filled	Total Cost
January	400	$ 5,350
February	325	5,050
March	675	6,600
April	700	6,300
May	425	5,450
June	500	5,850
July	550	6,150
August	300	5,200
September	450	5,500

Required:

1. Use the high-low method to estimate total fixed cost and variable cost per cavity filled.
2. Using these estimates, calculate Canyons total cost for filling 800 cavities.