Suppose demand for a monopolist's product is given by p = 300 6q while the monopolist's marginal cost is given by MC = 3q.

a)What is the profit-maximising quantity of output for this monopolist is? [4 marks]

b)What is the profit-maximising price? [2 marks]

c)A second firm with the same marginal cost enters. Firms engage in Cournot (quantity) competition. What is the equilibrium quantity? [4 marks]