Final answer:
A binding price floor cannot be represented by any of the given options.
Step-by-step explanation:
Binding Price Floor
In order to determine which price would constitute a binding price floor, we need to find the price at which the quantity supplied is greater than the quantity demanded.
Setting the demand and supply equations equal to each other:
280 - 4p = 2p + 40
Simplifying and solving for p:
6p = 240
p = 40
Therefore, the legally imposed price that would constitute a binding price floor is $40. None of the given options - $50, $60, $70, or $80 - would be considered a binding price floor.