Final answer:
Money serves three main functions: medium of exchange, store of value, and unit of account.
Step-by-step explanation:
Money serves three main functions: as a medium of exchange, a store of value, and a unit of account.
Firstly, money acts as a medium of exchange, allowing people to easily trade goods and services without the need for bartering.
Secondly, money serves as a store of value, meaning it allows individuals to save and hold wealth over a period of time.
Lastly, money acts as a unit of account, providing a standardized measure of value for goods, services, and debts.