Final answer:
A monopoly firm tends to charge a higher price and produce a lower quantity than in a competitive market.
Step-by-step explanation:
A monopoly firm, which is protected from competition by barriers to entry, will tend to charge a higher price and produce a lower quantity than would a competitive market.
A monopoly is not a price taker like a perfectly competitive firm; it has the power to determine the market price and quantity of output. The monopolist's total revenue will start low, rise, and then decline as it sells more units at a lower price.