The highest temperature is: 40°F
The lowest temperature is: -5°F
In order to find the change in temperature, we need to substract the lowest temperature, from the highest temperature:
[tex]\text{change}=\text{highest}-\text{lowest}[/tex]We substitute our values:
[tex]\text{change}=40-(-5)[/tex]Since -(-5) becomes +5:
[tex]\begin{gathered} \text{change}=40+5 \\ \text{change}=45 \end{gathered}[/tex]Answer: the temperature changed by 45°F
