Answer: See explanation
Step-by-step explanation:
a. The computer is priced at $1,299, and the vacation is priced at $750.
This is a unit of account as Manuel can measure and compare the prices of the two goods.
b. Manuel has only $1,537 in his checking account.
This is store of value. This means that money can be saved by an economic agent and later retrieved in the future when the person needs it.
c. Manuel writes a check for $1,299.
This is a medium exchange. Manuel buying the computer and writing a check for $1,299 shows that money can be used in exchange for goods and to pay for transactions.