1. (50 putin) Two mining firms produce coul each year, Slubexuan Coal Company Blee q, time of coal per year while Guddogs Coal Company mining, tom of cul per year, 0 = q, + 9, h die spital annual manage of coal produced by the coal inhutry, The demand function for the duopoly is porn Im Ppa-bQ where a and bure palthe ccion Firmren, The cujoqual tarian for cack firm satisfy Awnme that of = Zo, and 6 50, 2) (15 penn) Dethe expresion for F". gi and di ming Cramer's Rule. 1 (10 point Sign the effectsof an increase in ca co /, q; and q; Under whit condition will the effect of Gun of be negative! If this cous limos balls, what will be the sign of the effect " (15 point) Write the maprendon for P. of and o; il the pasmoment phonies a per fan will ly s n each firm. Notes you mus write these copieslions, nor dome then, .D (10 poion) Sign the chine of an increase in the per ton inbaily nun P. 4; and of