Which of the following situations can be modeled by the expression -8 + 35?

Question

When Shawn woke up, the temperature was -8°F. By noon, the temperature had increased by 35°F. What was the temperature at noon? When Shawn woke up, the temperature was -8°F. By noon, the temperature had increased to 35°F. By how much did the temperature change?
While Shawn was sleeping, the temperature decreased by 8°F. If the temperature was 35°F when Shawn went to bed, what was the temperature when Shawn woke up?
None of the above.

Answer 1

-8 + 35   can be read as    35 - 8    when we rearrange the numbers in the mathematical sentence.

 

When Shawn went to bed, the temperature was originally 35 degrees.  As time passed, which is the point he was sleeping, the temperature decreased by 8 degrees.  Decrease will be indicated by a negative.  Decrease by 8  is  -8.

 

Therefore, the last situation will make sense.