All else constant, as more firms substitute alternative materials, e.g., plastic, for copper, the market price of copper would be expected to:

Given the data in Table 6.1, the labor force participation rate of Metropolis is approximately

A) 96 percent. B) 91 percent. C) 83 percent. D) 78 percent.

Refer to Table 20.1. The income tax in Oceania is

A) progressive. B) regressive. C) proportional. D) a flat tax.