If Tom tattles, what would Sarah's best response be

Suppose that two clothing manufacturers, Frederick's Fashions and Stephan's Styles, announce that they plan to merge. The Herfindahl-Hirschman index is currently 1,500. After the merger, the HHI will rise to 1,560. This market is

A) highly concentrated and so the government will definitely challenge the merger. B) moderately concentrated and because the merger increases the HHI by more than 50 points, the government will definitely challenge the merger. C) moderately concentrated, but because the merger increases the HHI by less than 100 points, the government will probably not challenge the merger. D) competitive and so the government will not challenge the merger.

Refer to the information provided in Table 19.8 below to answer the question(s) that follow.Table 19.8Total IncomeTotal Taxes$20,000 $2,000 40,000  4,800 60,000  9,000 80,000  16,000Related to the Economics in Practice on page 393: Refer to Table 19.8. If income increases from $20,000 to $40,000, the marginal tax rate is

A. 2%. B. 12%. C. 14%. D. indeterminate from this information.