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CASH: the common term for paper currency and metal coins components of the money supply. Cash includes the foldable green paper with portraits of famous dead people, and those shiny metal discs with raised imprints of famous dead people. Cash is often divided into the "cash in circulation" which is what the nonbank public uses for purchases, and "vault cash" which is what banks have stashed away in the large, highly-secured, vaults. Cash in circulation is part of the money supply. Vault cash is part of bank reserves.

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MARGINAL REVENUE, MONOPOLISTIC COMPETITION

The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a monopolistically competitive firm receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a monopolistically competitive firm equates marginal revenue and marginal cost.

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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius hoping to buy either a birthday greeting card for your aunt or a wall poster commemorating the moon landing. Be on the lookout for the happiest person in the room.
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The average bank teller loses about $250 every year.
"He who has begun has half done. Dare to be wise ‚ begin! "

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