Final answer:
To determine the quantities demanded and supplied at a price of $120, we need to consider the demand and supply functions. Without specific information, we can determine if a shortage or surplus exists by comparing the quantities demanded and supplied.
Step-by-step explanation:
To determine the quantities demanded and supplied at a price of $120, we need to consider the demand and supply functions. Without information about these functions, it is not possible to determine the specific quantities demanded and supplied. However, we can determine if a shortage or surplus exists by comparing the quantities demanded and supplied. If the quantity demanded is greater than the quantity supplied, a shortage exists. Conversely, if the quantity supplied is greater than the quantity demanded, a surplus exists. The size of the shortage or surplus would depend on the difference between the quantities demanded and supplied.