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	300	$5,000
February	375	5,200
March	550	6,150
April	500	5,700
May	450	5,500
June	525	6,000
July	350	5,100
August	625	6,300
September	600	6,250

show all of your work please

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 575 cavities.