Health and Wealth Company is financed entirely by common stock that is priced to offer a 18% expected return. If the company repurchases 30% of the common stock and substitutes an equal value of debt yielding 8%, what is the expected return on the common stock after refinancing?

Which of the following statements is (are) true? i. free entry to a perfectly competitive industry results in the industry's firms earning zero economic profit in the long run, except for the most efficient producers, who may earn economic rent. ii. in a perfectly competitive market, long-run equilibrium is characterized by lmc < p < latc. iii. if a competitive industry is in long-run equilibrium, a decrease in demand causes firms to earn negative profit because the market price will fall below average total cost.