Mountain Dental Services is a specialized dental practice whose only service is filling cavities. Mountain has recorded the following for the past nine months: Number of Cavities Filled 375 Month January February March April 500 350 600 Total Cost $5,300 5,850 5,200 6,250 5,150 5,700 6,100 6,300 5,550 May June July 325 475 525 575 450 August September Required: 1. Use the high-low method to estimate total fixed cost and variable cost per cavity filled. 2. Using these estimates, calculate Mountain's total cost for filling 400 cavities. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Use the high-low method to estimate total fixed cost and variable cost per cavity filled. (Round your Variable cost per unit to 2 decimal places.) Fixed Cost Variable Cost per cavity filled Complete this question by entering your answers in the tabs below. Required 1 Required 2 Using these estimates, calculate Mountain's total cost for filling 400 cavities. Estimated Total Cost