Joan begins the month with $100 in her checking account. when she receives a pay check for $1,200 on the 5th of the month, she puts $1,080 in her checking account and $120 in her savings account. during the month, she spends $550 on rent and utilities, $30 on household items, $10 on a t-shirt, and $350 on food, leaving a balance of $240 in her checking account. based on the given information, which statement is not true based on the given information, which statement accurately describes the function of joan's money? her expenditures use funds as a medium of exchange but with no role for money as a unit of account. savings is a store of value measured in units of account. depositing money in savings is using it as a medium of exchange. buying goods and services uses money as a store of value and unit of account