A monopoly can make positive economic profit in the long run because A. new technology constantly lowers costs for the monopoly firm and for its competitors B. other firms eventually exit the market until the one remaining firm is making an economic pro C. barriers to entry prevent other firms from entering the market and sharing the profit D. eventually demand will increase and prices will rise Roxie's Movie Theater is the only one in town. The table gives the demand schedule for movie tickets. Roxie's is a single-price monopoly and the marginal cost of showing a movie is $0 What is Roxie's movie ticket price and how many movie tickets a week will Roxie's sell? Roxie's will charge a movie ticket and will sell movie tickets a week. A. $12;200 B. $9;300 C. $6;400