Since the profit model is a cubic polynomial, the marginal profit is alinear polynomial, cubic polynomial, logarithm, quadraticpolynomial or exponential function?1The graph of marginal profit isa parabola opening upward, a parabola opening downward, a straight line winegative slope, or a straight line with positive slope?¶|What is r? Round to the nearest integer. What is u? Round to 1 decimal place.What is s? Round to 2 decimal places.What is u? Round to 1 decimal place.Use the weekly profit model to estimate the total weekly profit when the weekly production is 151.Round to the nearest dollar.What is t? Round to 4 decimal places.$.D. FocusPage 1 of 1Accessiblity: Investigate31 words9:02 PMN di O L%2323%P Type here to search11/16/2021** 12Deleto一F11PrtscInsertF10%23NumLockBackspace123458. Yaster Outfitters manufactures and sells extreme-cold sleeping bags. The table below shows theprice-demand aod total cost data, where:• pis the wholesale price (in dollars) of a sleeping bag for a weekly demand of a sleeping bags;. Cis the total cost (in dollars) of producing z sleeping bags.r (sleeping bags)P (S)C (S)9524013,00012023514,30018015518.5002205021.000Find a quadratic regression equation for the price-demand data, using z as the independent variable.p= a + br + cz?Round a to the nearest integer, round b to 2 decimal places, and round c to 4 decimal places.Revenue ModelUsing the regression model computed above, find a model for the weekly revenue, using r as theindependent variable.NOTE: Do not calculate another regression. Use the price equation to find a model for revenueR(z) = p. a.R(z) = p. æ = (a + br + cz?)z aE + bz? + cr3Profit ModelCost ModelUse the models computed to find a model for the weekly profit, using z as the independent variable.P(z) =r+ uz + sz² + tz³Find a linear regression model for the weekly cost data, using r as the independent variable.NOTE: Do not calculate another regression. Use the fact that profit is revenue minus cost.C(z) = mx + kRound r to the nearest integer, round u to 1 decimal place, round s to 2 decimal places, and round tto 4 decimal places.Round m to 1 decimal place, and round k to the nearest integer.O Focus23%* Accessibility: Investigateof31 wordsPage 1 of 1P Type here to searchPriScInsertDelete

Note: According to bartleby guidelines, solution of first three sub-parts will be provided. Finding the quadratic regression equation for price−demand data as shown below: Finding the linear regression equation for weekly cost data as shown below:Therefore, Profit Therefore, marginal profit is quadratic function. Graph of marginal profit: The graph of a marginal profit is a parabola opening downward.