Write and solve an equation to determine how many degrees the temperature TT fell. The temperature at 5 P. M. is 20∘20∘

f. The temperature at 10 P. M. is - 5∘-5∘F

In order to determine the temperature drop per hour, we use the formula:

Rate of drop = (final temperature - initial temperature) / (final time - initial time)

Rate of temp drop = (-5 - 20) / (10 - 5)

Rate of temp drop = - 25 / 5

The temperature dropped at a rate of - 5 °F per hour.