11. Suppose Mr. Smith's demand for fireworks is given by P = 20 - QP and Mr. Goldblum's demand for fireworks is given by P = 15 - QP. Also assume it costs 30 dollars to put on a small fireworks display. (a) Can Mr. Smith afford to put on a single display (QP = 1) all on his own? (b) Can Mr. Goldblum afford to put on a single display (QP = 1) all on his own? (c) Can Mr. Smith and Mr. Goldblum put on the display together? (d) Why might Mr. Smith and Mr. Goldblum not be able to put on the display together? (e) Name a way the fireworks display could still be put on (overcoming the free rider problem).