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 January February March April May June July August September Number of Cavities Filled 625 700 500 425 450 300 375 550 575 Total Cost $5,600 6,000 4,500 4,100 4,500 3,200 3,500 4,900 5,400 Required 1. Use the high-low method to estimate total fixed cost and variable cost per cavity filled Fixed Cost Variable Cost per Unit 2. Using these estimates, calculate Mountain's total cost for filling 500 cavities Estimated Total Cost