Need answers to both please

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 fixed cost and variable cost per cavity filled. 2. Using these estimates, calculate Mountain's total cost for filling 450 cavities. Complete this question by entering your answers in the tabs below. Use the high-low method to estimate total fixed cost and varlable cost per cavity filled. (Round your Varlable cost per unit to 2 decimal places.) Riverside inc makes one model of wooden canoe. Partial information for it follows: Required: 1. Complete the table. 3. Suppose Riverside sells its canoes for $508 each. Calculate the contribution margin per canoe and the contribution margin ratic 4. Next year Riverside expects to sell 865 canoes. Complete the contribution margin income statement for the company. Complete this question by entering your answers in the tabs below. Complete the table. (Round your cost per unit answers to 2 decimal places.)