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January 28, 2026 

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DEBIT CARD: An increasing popular means of accessing the funds in a bank checking account. While debit cards look (and taste) almost exactly like credit cards, they are fundamentally different in how they are processed on a bank's end of the transaction. A credit card works through a liability (a loan with the bank). A debit card works through an asset (a checkable deposit with the bank). As such, debit cards are better suited for the title "plastic money" than credit cards.

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PERFECT COMPETITION, PROFIT MAXIMIZATION

A perfectly competitive firm is presumed to produce the quantity of output that maximizes economic profit--the difference between total revenue and total cost. This production decision can be analyzed directly with economic profit, by identifying the greatest difference between total revenue and total cost, or by the equality between marginal revenue and marginal cost.

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APLS

GREEN LOGIGUIN
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Today, you are likely to spend a great deal of time flipping through mail order catalogs wanting to buy either a packet of address labels large enough for addresses of both the sender and the recipient or a key chain with a built-in flashlight and panic button. Be on the lookout for pencil sharpeners with an attitude.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
"Even a mistake may turn out to be the one thing necessary to a worthwhile achievement."

-- Henry Ford

ARIMA
Autoregressive Integrated Moving Average
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