Which of the following titles describes a first-line manager? A. Vice president, Consumer Products Division B. Purchasing manager C. Customer service supervisor D. Vice president of sales

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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.

Anational survey asked people, "how often do you eat out for dinner, instead of at home? " the frequencies were as follows.