【单选题】If a firm spends $600 on advertising, its goal is for the demand curve for its product to shift ________ and its marginal revenue curve to shift ________.
【简答题】Case
study Consider two firms called Firm A and Firm
B, which have similar revenue and expenses. Firm A, however, makes a much
greater effort to clean up the environment; it spends $10 million, while ...