Answer:
The temperature fall 6 degrees between 3:00pm and 8:00pm
Step-by-step explanation:
At 3:00pm, the thermometer reads 4 degrees celcius
At 8:00pm, it reads -3 degrees celsius
See the below:
4, 3, 2, 1, -1, -2, -3
Notice that the temperature fall 6 degrees between 3:00pm and 8:00pm