Need help to calculate bellow.

2*. Consider a market with two rms where the inverse demand function is given by p = 28 2g and Where q = q; + q;. Each rm has the total cost function C(93) = 4:}; where i = {1,2}. a) Compare price level, quantities and prots in this market calculating the Cournot equilibrium and the Stackelberg equilibrium. Draw a graph with best response functions and illustrate the Cournot and Stackelberg solutions in that graph. b) Compare your solutions in a) to the outcomes under perfect competition and under collusion (monopoly) and illustrate your additional ndings in the same graph