Final answer:
To predict the number of employees based on waiting time, we need the trendline equation, which is not provided in the question.
Step-by-step explanation:
To predict how many employees were working based on the time Kiara waited, we need to use the trendline equation. However, the trendline equation is not provided in the question, so we cannot provide an accurate prediction. If you have the trendline equation or any other information about the number of employees at different times, please provide it so that we can assist you further.