Answer
a) Yes
b) No
c) No
d) No
Work Step by Step
a) A penny is a medium of exchange, a unit of account, and a store of value.
b) A peso is not a medium of exchange (in the U.S. economy), and it is not a unit of account (since prices are in dollars and cents). It could be a store of value, however.
c) The painting is not a medium of exchange and is not a unit of account (since prices are in dollars and cents). It could be a store of value, however.
d) A credit card is not a store of value and cannot be given to sellers when goods and services are purchased (by the buyer).
