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 Total Cost 625 $6,350 525 5,950 475 5,650 375 5, 350 675 6,500 500 5,700 325 5,150 700 6,350 450 5, 450 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 550 cavities. Estimated Total Cost