E5-5 Estimating Cost Behavior Using High-Low Method [LO 5-3] 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 575 375 600 300 550 450 700 475 500 Total Cost $6,350 5,200 6,250 5,150 6,000 ,650 6,350 5,850 5,850 January February March May June July August September Required 1. Use the high-low method to estimate total fixed cost and variable cost per cavity filled.(Round your answers to 2 decimal places.) Fixed Cost Variable Cost per Unit 2. Using these estimates, calculate Mountain's total cost for filling 650 cavities. Estimated Total Cost