When Nathan went to bed, the outside temperature was 28°F. When he woke up the next morning, the temperature had decreased to -13°F. By how many degrees did the temperature change during the overnight hours?

Step-by-step explanation:

Given that the initial temperature outside was  28°F before Nathan went to bed, to solve for the amount the temperature decreased, we need to understand that it first decreased from 28°F to  0°F first before it went down to  -13°F

Hence from  28°F-  0°F --- it has decreased by  28°F

Also from  0°F- 13°F--- it has decreased by 13°F

Therefore in total it decreased by ( 28°F+ 13°F)=  41°F

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