If the CPI was 104 in 1967 and is 390 today, then $10 in 1967 purchased the same amount of goods and services as

The production possibilities frontier is the boundary between those combination of goods and services that can be

A) produced and those that can be consumed. B) consumed domestically and those that can be consumed by foreigners. C) produced and those that cannot be produced. D) consumed and those that cannot be produced.

If there is instability in the demand for commodities,

A) a monetary policy of fixed interest rates will perform better than a policy of holding the real money supply fixed. B) a countercyclical money-supply policy will cause large swings in interest rates. C) a fixed money supply policy will perform better than countercyclical changes in money supply. D) a fixed money supply policy will stabilize interest rates.