Answer:
The required integer is -15.
Explanation:
Given,
The temperature dropped 3°c every hour,
So, the change in temperature every hour = -3°C
Total number of hours for which the temperature were changed = 5,
Thus, the total change in temperature = change for an hour × total number of hours,
= -3° × 5
= -15°
Hence, the integer that represents the change in temperature is -15.