If a country had a trade surplus of $50 billion and then its exports rose by $30 billion and its imports rose by $20 billion, its net exports would now be

A sales tax imposed on tires ________ consumer surplus and ________ producer surplus

A) increases; increases B) increases; decreases C) decreases; increases D) decreases; decreases E) does not change; does not change

Investment demand is downward sloping because as the interest rate decreases,

A) each project's internal rate of return decreases. B) each project's internal rate of return increases. C) more projects will have an internal rate of return that exceeds the interest rate. D) more projects will have an internal rate of return that is less than the interest rate.

Which of the following properties should a commodity have to be considered as money?

a. It should be scarce and rare. b. It should be perishable. c. It should be indivisible. d. It should be unpredictable in value. e. It should be homogenous in nature.

Assume that the central bank sells government securities in the open market. If the nation has highly mobile international capital markets and a fixed exchange rate system, what happens to the real risk-free interest rate and net nonreserve-related borrowing/lending in the context of the Three-Sector-Model? State your answer after the macroeconomic system returns to complete equilibrium

a. The real risk-free interest rate remains the same and net nonreserve-related borrowing/lending balance becomes more positive (or less negative). b. The real risk-free interest rate falls and net nonreserve-related borrowing/lending balance becomes more negative (or less positive). c. The real risk-free interest rate rises and net nonreserve-related borrowing/lending balance becomes more negative (or less positive). d. The real risk-free interest rate and net nonreserve-related borrowing/lending balance remain the same. e. There is not enough information to determine what happens to these two macroeconomic variables.