Final answer:
The temperature at 11 p.m. would be -8 degrees Celsius after dropping 2 degrees Celsius per hour for 6 hours from an initial temperature of 4 degrees Celsius at 5 p.m.
Step-by-step explanation:
If the temperature is 4 degrees Celsius at 5 p.m. and it drops 2 degrees Celsius per hour, we can calculate the temperature at 11 p.m. by determining how many hours have passed and then multiplying that by the hourly rate of temperature change. From 5 p.m. to 11 p.m., 6 hours have passed. If the temperature drops 2 degrees Celsius each hour, the total drop over 6 hours would be 2 degrees/hour × 6 hours, which equals 12 degrees Celsius.
Now, we subtract the total temperature drop from the initial temperature:
Initial temperature: 4°C
Total drop: 12°C
Temperature at 11 p.m. = 4°C - 12°C = -8°C
Thus, the temperature at 11 p.m. would be -8 degrees Celsius.