In macroeconomics, describes a situation in which two people each want to exchange some good or service that the other can provide. (a) a medium of exchange(b) a double coincidence of wants(c) interrelated banking(d) the usefulness of money

1. what must one do to perform the essential managerial task of controlling in achieving organizational goals? a. motivate, coordinate, and energize individuals and groups to work together to achieve organizational goals b. choose appropriate organizational goals and courses of action to best achieve those goals c. establish task and authority relationships that allow people to work together to achieve organizational goals d. establish accurate measuring and monitoring systems to evaluate how well the organization has achieved its goals