E5-7 (Algo) 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: Required: 1. Use the high-low method to estimate total flxed cost and varlable cost per cavity fllled. 2. Using these estimates, calculate Mountain's total cost for filling 750 cavitics. Complete this question by entering your answers in the tabs below. 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.)