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	525	$6,100
February	650	6,000
March	550	6,100
April	475	5,850
May	400	5,250
June	625	6,400
July	600	6,350
August	300	5,000
September	700	6,600

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 450 cavities.

Fixed Cost
Variable Cost per cavity filled

Estimated Total Cost