Final answer:
Jack has the least amount of money since his balance is -2.25, which is lower than Sam's -1.25 and Miranda's -1.85.
Step-by-step explanation:
The student's question asks who has the least amount of money among Sam, Miranda, and Jack, given their respective balances stated in negative dollars.
When speaking about negative balances, the larger the negative number, the less money someone has because they are further below zero.
Therefore, among the balances of -1.25 for Sam, -1.85 for Miranda, and -2.25 for Jack, Jack has the least amount of money because -2.25 is less than both -1.25 and -1.85.