Temperature at 5pm was 0degree c.if temperature is dropping2degree c per hour what was the temperature 9hours ago?

Answer 1

Temperature at

5pm = 0degreec. Drop in temperature =2degree c per hour. 0degreec - 2degreec = - 2degreec.temperature 9 hrs ago= -2degreec - 0degreec = 2degreec

Answer 2

if dropping 2°/hr, then 9 hours ago, it was 2*9 = 18° higher than it is now.