manufacture sells 1850 tv's/week at 510 ea. A survey indicates ea. 11 rebate offered to a buyer the # of tvs sold would increase by 110/wk. What is the demand function p(x), x is tvs sold/week, how large rebate should the co offer a buyer, to max revenue? If wk cost function is 157250+170x, how should it set the size of the rebate to max its profit?