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Choose the one alternative that best completes the statement or answers the question.
Indicate whether the function is one-to-one.
-{(12, -18) , (-12, -18) , (20, -8) }
Fiat Money
Fiat money is currency that a government has declared to be legal tender, despite it not being backed by a physical commodity.
Precious Metal
Rare, naturally occurring metallic elements of high economic value, typically used for currency, jewelry, and other arts because of their rarity, durability, and aesthetic qualities.
Fiat Money
A form of money officially accepted as legal tender, not supported by a real commodity, as declared by authorities.
Commodity Money
Money whose value comes from a commodity of which it is made, such as gold or silver, with intrinsic value.
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