The table to the right contains price-demand and total cost data for the production of projectors, where p is the wholesale price (in dollars) of a projector for an annual demand of x projectors and C is the total cost (in dollars) of producing x projectors. Answer the following questions (A)-(D). х 360 460 620 780 p($) 603 392 145 55 C($) 104,000 125,600 152,000 192,000 (A) Find a quadratic regression equation for the price-demand data, using x as the independent variable. y= (Type an expression using x as the variable. Use integers or decimals for any numbers in the expression. Round the coefficients to seven decimal places as needed. Round the constant term to three decimal places as neede