Answer:
Medium of exchange
unit of account
 store of value
Step-by-step explanation:
Money is anything that is generally accepted as a means of payment for goods and services and for repayment of debt. 
Functions of money 
1. Medium of exchange : money can be used to exchange for goods and services. For example, by writing the check, he is exchanging money for a car 
2. Unit of account : money can be used to value goods and services, For example, price was used to determine which was more expensive between the super and the duper 
3. Store of value : money can retain its value over the long term, this it can be used as a store of value.