The graph above shows the marginal social cost, supply, and marginal social benefit in an industry that generates pollution. Use this graph to answer Questions 7 and 8.
The graph above depicts the marginal benefit of pollution to plants A and B. Currently, each firm is emitting 600 tons of pollution. Use the graph to answer Questions 9 and 10.
Instead of using taxes, if the government were to set environmental standards to cut the total amount of pollution in half, what would be the resulting marginal benefits to plants A and B?
Which of the following combinations correctly describes the changes since the 1970s in the poverty threshold and in the mean income as compared to the median income in the United States?