The marginal propensity to save is:
a. the change in saving induced by a change in consumption.
b. (change in S) / (change in Y).
c. 1 ? MPC / MPC.
d. (change in Y ? bY) / (change in Y).
e. 1 ? MPC.
e
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The above table shows the market shares for all the landscaping services in a suburban area. A merger between the three largest firms would
A) make the industry more competitive. B) increase the four-firm concentration ratio and increase the Herfindahl-Hirschman Index (HHI). C) increase the four-firm concentration ratio and decrease the Herfindahl-Hirschman Index (HHI). D) decrease the four-firm concentration ratio and decrease the Herfindahl-Hirschman Index (HHI).
An appreciation of one's currency means that:
a. the country's exports will become less expensive. b. the country's imports will become more expensive. c. the country's imports will become less expensive. d. it now requires more of this currency in exchange for one unit of another currency. e. it now requires less units of other currencies in exchange for one unit of this currency.