You work for a division of a textbook publisher that manages the company's economics textbooks. Senior managers have instructed you to find a way to reduce your division's total cost by 30 percent. Currently, your division handles three principles textbooks that are purchased by thousand of students every year and 25 textbooks in specialized areas of advanced economics, each of which is purchased by a few hundred students per year. If you only objective is to reduce total costs as requested by senior management, would you recommend that your division stop publishing one or more principles books, one or more specialized books, or a mix of the two responses or are there other ways of researching management's goals?