Currently, the form of exchange that is most used in the United States today is the money or the dollar. <span>A </span>medium of exchange<span> is an intermediary used in </span>trade<span> to avoid the inconveniences of a pure </span>barter system. <span>When </span>money<span> is used to intermediate the </span>exchange<span> of goods and services, it is performing a function as a </span>medium of exchange<span>. Unit of Account: It is a standard numerical unit of measurement of market value of goods, services, and other transactions.</span>