Final answer:
The significance of the point (12, 780) on a graph of salesmen's functions likely relates to a performance milestone or market equilibrium. The exact meaning depends on the context of the function, such as a supply and demand model.
Step-by-step explanation:
The point (12, 780) appears to be significant in the context of the graph representing the function of salesmen because it likely represents a key data point that could be related to sales performance, targets, or economic models such as supply and demand. Without the specific context or function definitions, it's challenging to state with certainty why this point is significant. However, if we refer to an example from the given information where quantity demanded (Qd) equals quantity supplied (Qs) at 12 units for a price of $2 each for personal pizzas, we might infer that the point (12, 780) could similarly represent an equilibrium between supply and demand for another product or service that these salesmen are involved with.
If this point were on a graphical model such as a supply and demand curve, it would signify where the market is in equilibrium, which is a key concept in economics. On a sales graph, this point could also indicate a sales goal or a performance milestone. In any case, this point would be an essential part of analyzing the success or behavior of the salesmen in the context of the problem.