Yaster Outfitters manufactures and sells extreme-cold sleeping bags. The table below shows the pricedemand and total cost data, where: - p is the wholesale price (in dollars) of a sleeping bag for a weekly demand of x sleeping bags; - C is the total cost (in dollars) of producing x sleeping bags. Use this data to create regression models to answer all of the questions below. Profit Model Use the revenue and cost models above to construct a model for profit. Find a model for the weekly profit, using x as the independent variable. P(x)=r+ux+sx2+tx3 NOTE: Do not calculate another regression. Use the fact that profit is revenue minus cost. Round r to the nearest integer, round u to 1 decimal place, round s to 2 decimal places, and round t to 4 decimal places. Use this profit model to answer questions 16-29 below. The graph of marginal profit is