Final answer:
When X equals 0 in the context of the average rate of change in profits, it signifies that the profits of a company have remained constant over the time period in question.
Step-by-step explanation:
If X=0, it implies that the average rate of change in profits over the 8 months since the company changed management is that profits remained constant. The value of X in this context is assumed to be the change in the profit levels over time. As X equals zero, it indicates that there has been no increase or decrease in the level of profits - they have remained at a steady state.