"Dmitri wants to purchase a new computer and go to the Caribbean for spring break. The computer is priced at $1,299, and the vacation is priced at $750. He has only $1,537 in his checking account, so he cannot afford to purchase both. After much thought, Dmitri buys the computer and writes a check for $1,299".
Identify what role money plays in each of the following parts of the story.

Role of Money

Medium of Exchange Unit of Account Store of Value
Dmitri can easily determine that the price of the
computer is more than the price of the vacation.

Dmitri has $1,574 in his checking account.

Dmitri writes a check for $1,299.