2 pls help correct me :)

Mountain Dental Services is a specialized dental practice whose only service is filling cavities. Mountain has recorded the follow the past nine months Number of Cavities Filled 575 375 600 300 Month January February March April May June July August September 55e 458 Tee 475 500 Total Cost $6,350 5, 2ee 5,250 5,150 6, eee 5,650 6,350 5,850 5,850 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 650 cavities. Answer is complete but not entirely correct. 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.) Fored Cost Variable Cost per cavity filled $ 4.250 $ 1.850.00 Required 2 >