4. The temperature is falling 3 degrees per hour. How many degrees has it fallen altogether from 12 noon to 12 midnight?

Assuming temperatures fall at the same rate throughout the afternoon over 12 hours, it would have fallen 12 hours * 3 degrees/hours = 36 degrees!

4 degrees/4 hours=

45

To determine the number of degrees the temperature has fallen altogether from 12 noon to 12 midnight, we need to first calculate the number of hours that have passed. Since it is from 12 noon to 12 midnight, it is a duration of 12 hours.

Next, we need to multiply the number of hours by the rate of temperature decrease per hour. In this case, the temperature is falling 3 degrees per hour. So, we will multiply 3 by 12 to find the total temperature decrease.

Let's do the calculation:

Temperature decrease per hour: 3 degrees
Duration: 12 hours

Total temperature decrease = (Temperature decrease per hour) x (Duration)
= 3 degrees/hour x 12 hours
= 36 degrees

Therefore, the temperature has fallen a total of 36 degrees altogether from 12 noon to 12 midnight.