Can someone help me correct what I got wrong. Thanks:)

Mountain Dental Services is a specialized dental practice whose only service is filling cavities. Mountain has recorded the following for the past nine months: 500 Month January February March April May June Number of Cavities Filled Total Cost 375 $5,300 5,850 250 5,200 600 6,250 325 5,150 475 5,700 525 6,100 575 6,300 450 5,550 July August September 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 400 cavities. Complete this question by entering your answers in the tabs below. Required 1 Required 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 S 3,850 $ 5,450.00 & Required 1 Required 2 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 Coat 375 $5,300 500 5,850 350 5,200 600 6,250 325 5,150 475 5,700 525 6,100 575 6,300 450 5,550 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 400 cavities. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Using these estimates, calculate Mountain's total cost for filling 400 cavities. Estimated Total Cost $ 5,495 X