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. Hint: Select each role only once. Role of Money Medium of Exchange Unit of Account Store of Value Dmitri has $1,537 in his checking account. Dmitri writes a check for $1,299. Dmitri can easily determine that the price of the computer is more than the price of the vacation.