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

Month	Number of Cavities Filled	Total Cost
January	475	$5,850
February	350	5,150
March	600	6,150
April	325	5,150
May	375	5,400
June	675	6,550
July	525	5,950
August	450	5,600
September	500	5,850

Required:

1. Use the high-low method to estimate total fixed cost and variable cost per cavity filled.

2. Using these estimates, calculate Mountains total cost for filling 300 cavities.