IF TEMPERATURE IS 8 DEGREES AT 1200 AM & EACH OF THREE HOURS THE TEMPERATURE DROPS BY 5 DEGREES ,WHAT IS THE TEMPERATURE AT 0300 AM = 3 DEGREES
If you meant that the temperature drops by 5° every 3 hours, you are correct.
However, the problem said that the temperature dropped by 5° in each of the 3 hours. In that case, the temperature at 3:00 would be
8 - 3*5 = -7°