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 Filed Month January February March April 450 575 700 Total Cost $5 250 6.250 6,500 5.300 5.950 5,300 5.600 6500 5.200 300 500 350 600 675 425 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 placa Fbced Cost Variable Cost per 2. Using these estimates Calculate Mountain's total cost for filling 400 cavities Estimated Total Cost