A monopolist has a total cost given by 10

A monopolist has a total cost given by 10.Q+28and faces a demand curve given by -5.Q+141

What is the profit-maximizing quantity the monopolist supplies the market?

What is the profit-maximizing price the monopolist sets in this market?

Suppose instead of a monopoly, the market is served by a bunch of perfectly competitive firms each with the same cost structure as the monopolist

What is the profit-maximizing quantity these firms supply the market ?

What is the profit-maximizing price in this market?

What is the dead weight loss from having a monopoly versus a perfectly competitive market?

What is the long run decision of some of the firms in the competitive industry? More firms will enter or Some or all firms will exit