Question

The temperature at 6:00 pm was 3°C. At midnight, the temperature was -2°C. What real number represents the change in temperature?

a. 5
b. -5
c. -1
d. 1

Answer 1

The change in temperature between 6:00 pm and midnight is a 5°C increase, so the correct answer is option a. 5.

Step-by-step explanation:

The real number representing the change in temperature from 6:00 pm to midnight is the difference between the two temperatures. To calculate the change, subtract the final temperature from the initial temperature: 3°C (initial) - (-2°C (final)) = 3°C + 2°C = 5°C. Thus, the change in temperature is 5°C.