The cost (supply) of each "unit" of NPR (National Public Radio) is P=9. Derek's valuation for each unit of NPR (demand) is given by Pp=20-2Q, and Kim's valuation is given by Pk=10-Q. The social...

Extracted text: The cost (supply) of each "unit" of NPR (National Public Radio) is P=9. Derek's valuation for each unit of NPR (demand) is given by Pp=20-2Q, and Kim's valuation is given by Pk=10-Q. The social valuation of NPR is Ps= Q. The socially optimal amount of NPR is units. Without intervention, the private market would lead to an 수 of NPR. Suppose the government decides to subsidize NPR in order to achieve the socially optimal amount of NPR. The total demand function is Qr= The appropriate subsidy is $ (include 2 decimals) per unit of NPR.