It seems like you're referring to a scenario where the temperature decreases at a constant rate, but you haven't specified the rate of temperature decrease.

To help you, I would need the following information:

• The rate at which the temperature is decreasing (e.g., degrees per hour).

Once I have that, I can calculate the total change in temperature after 5 hours!

Do you want to clarify this information?

Here are five related questions to consider:

1. What is the initial temperature before the decrease begins?
2. Is the temperature decrease constant throughout the 5 hours?
3. Can the rate of temperature change vary over time, and how would that affect the outcome?
4. How would you calculate the change in temperature over 10 hours instead of 5?
5. What would happen if the temperature decreases below 0°C or 32°F?

Tip: Always express the rate of change in consistent units (e.g., degrees per hour) for clearer calculations.