Movements of a currency’s value in terms of the foreign exchange rate will affect the quantity of aggregate _______________ in an economy.

For a firm in perfect competition, a diagram shows quantity on the horizontal axis and both the firm's marginal cost (MC) and its marginal revenue (MR) on the vertical axis. The firm's profit-maximizing quantity occurs at the point where the

A) slope of the MC curve is zero. B) MC and MR curves are parallel. C) MC curve intersects the MR curve from below, going from left to right. D) MC curve intersects the MR curve from above, going from left to right.

During an economic expansion,

A) higher income tax revenues tend to automatically increase a budget deficit or reduce a budget surplus. B) higher income tax revenues tend to automatically increase a budget surplus or reduce a budget deficit. C) lower income tax revenues tend to automatically increase a budget deficit or reduce a budget surplus. D) lower income tax revenues tend to automatically increase a budget surplus or reduce a budget deficit.