Answer:
The budget of $9,000 is a constraint.
Step-by-step explanation:
In the scenario, there is no clear depiction as to whether if space would be a limiting factor, for example, there is no limit made on the number of chairs available or tables. So, in this case, the only limiting factor would be the budget for the event (budget = limit) since the company can only afford to spend a maximum sum of $9,000 for this event. They've spent $7,000 so far in total, meaning that they can only spend $2,000 more.
Thus, the constraint would be the budget of $9,000.