Price discrimination: a. by firms selling to final consumers is illegal, but it is usually legal in selling to intermediaries.
b. is not covered by federal laws, but in some states it is illegal.
c. is always illegal.
d. may be legal if the firm can prove that different prices were set based on different costs.
e. none of the above is true

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When the federal reserve buys bonds from or sells bonds to member banks, it is called monetary policy reserve ratio interest rate adjustment open market operations

The prebisch–singer hypothesis concludes that: a. technology lowers the cost of manufactured products, so developing countries should see an increase in their terms of trade. b. developing countries experience a long-run decline in their terms of trade, as the demand for primary products in higher-income countries declines relative to their demand for manufactured goods. c. because of unfair trading practices, labor in developing countries is exploited. d. opec has been responsible for a slowdown in the world's standard of living.