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ch 9


the money you make from your job


the plan you have for the money you spend


the money you earn for keeping your money in the bank

things used for money

shells, cows, whale teeth


trading a service or goods for another service or goods


when you can't get the product or thing you want because it is not available.


a place where you keep your money to keep it safe

opportunity cost

what you give up to get something else


...when one store charges lower prices than another

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