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(1) A monopolist (AT&T) is facing the following demand schedule P=24-3Q. That Md! implies P=24, then Q=1 implies P=21, and Q=2 implies P=18, and so one. Fixed costs will be neglected in this analysis. The marginal cost is constant and equal to 6 for every unit produced. Determine: i. The quantity produced corresponding to the amount of maximum prots. ii. Nash equilibrium price if a new competitor, Vodafone, enters the market with a MC =5 iii. Nash equilibrium price if a new competitor, Vodafone, enters the market with a MC=7. iv. In your answer to part (1), what would happen if the government charges an entry fee =50 to this company. v. In your answer to part (1), what would happen if the government introduces a sales tax (i.e., a specic tax per unit sold) of $3