Mountain Dental Services is a specialized dental practice whose only service is filling c cavities. Mountain has recorded the following for the past nine months er of Cavities Filled $6,350 6,250 6,400 6250 6,150 5,400 5,800 5,000 5,400 625 May 375 475 350 July Required 1. Use the high-low method to estimate total fxed cost and variable cost per cavity filled. (Round your answers to 2 decimal places.) 2. Using these estimates, calculate Mountain's total cost for filling 450 cavities