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: Number of Cavities Month Filled January 475 February 575 March 350 April 675 May 500 June 400 July 625 August 650 September 450 Total Cost $5,750 6,250 5,200 6,500 5,650 5,250 6,300 6,000 5,450 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 550 cavities. Complete this question by entering your answers in the tabs below. Required Required 1 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