For the last 4.5 hours, the temperature has decreased at a rate of 2.8 Degrees Fahrenheit per hour. Which best represents the overall change in temperature over this time period?

The overall change in temperature over the time period ∆T = - 12.6°F

Step-by-step explanation:

Rate of change of temperature r = - 2.8°F per hour

Time t = 4.5 hours

The overall change in temperature ∆T = Rate of change of temperature * time period

∆T = r * t

∆T = - 2.8°F per hour * 4.5 hours

∆T = - 12.6°F

The overall change in temperature over the time period is - 12.6°F