On a certain day, the temperature changed at a rate of - 3 per how. How long did it take for the change in temperature to be - 33?

Considering the temperature is 0°C and It is changing at a rate of - 3 per hour.

So, it took 11 hours for the change in temperature to be - 33.

Step-by-step explanation:

Rate of change basically means the amount of change to how long it takes for the change to occur.

Rate of change = Change in Value / Change in time

On a certain day the temperature changed at a rate of - 3 per hour.

Let suppose the Temperature at 8:00 = 0°C

As the temperature changed at a rate of - 3 per hour.

It means the Temperature at 9:00 = - 3°C.

so

Rate of change = (-3 - 0) / (9:00 - 8:00) = - 3°C per hour

So, the temperature to be - 33°C, it would take 11 hour as - 3 * 11 = - 33.

Therefore, it took 11 hours for the change in temperature to be - 33.