Final answer:
When communicating your location to a superior while investigating a fire, you would be correct to say you are in location 4O, which could be a shorthand used by the team.
Step-by-step explanation:
If you are investigating a fire in a taxpayer building with multiple occupancies and you are in the first store to the right of the pizzeria, which is a "99 cent" store, you would be correct in telling your superior that your location is 4O. The notation 4O might refer to a shorthand or code used by the investigating team to indicate specific locations within the incident scene. This allows for a clear and concise communication between team members. It is important that this shorthand is clarified beforehand to avoid confusion during the investigation.