Final answer:
When the amount of money refers to separate units, the verb is plural. However, if the amount of money is treated as a single unit, you would use a singular verb.
Step-by-step explanation:
When the amount of money refers to separate units, the verb is plural. For example, if you are talking about two separate amounts of money, you would use a plural verb.
Example: Two dollars are enough to buy a candy bar.
However, if the amount of money is treated as a single unit, you would use a singular verb.
Example: One hundred dollars is a lot of money.