Given:
The temperature change was reported to be -54.5 degrees in 2.8 hours.
To find: The average change in temperature per hour
Explanation:
The average change in temperature is,
[tex]\begin{gathered} Average\text{ change}=\frac{|Change\text{ }in\text{ }temperature|}{Time} \\ =\frac{|-54.5|}{2.8} \\ =19.4 \\ \approx19^{\circ}\text{ per hour} \end{gathered}[/tex]The average change in temperature is 19 degrees per hour.
Final answer:
The average change in temperature is 19 degrees per hour.