An accurate demand curve can be derived by examining the quantities of a good that are sold over time as the price varies.

The slope of an indifference curve is called the

a. bliss gradient. b. happiness slope. c. average transformation rate. d. marginal rate of substitution.

Domestic monetary policy is essentially useless under

a. a floating exchange rate system. b. a fixed exchange rate system. c. the gold standard. d. conditions of balance of payments surpluses.