Answer:
a medium of exchange
a unit of account
a store of value,
Explanation:
Functions of money
1. Medium of exchange : money can be used to exchange for goods and services. For example, money serves as a medium of exchange when you pay $20 for your favourite jeans
2. Unit of account : money can be used to value goods and services, For example, $20 is the value of your favourite jeans
3. Store of value : money can retain its value over the long term, this it can be used as a store of value