Question

At midnight in Winnipeg, the temperature was -23 degrees C. During the next 24 hour, the temperature rose 12 degrees C, then dropped 8 degrees C. What was the final temperature?

Answer 1

`-19^o"C"`

Explanation:

We can write the following expression `-23^o"C"+12^o"C"-8^o"C"`
beacuse we initially started at `-23^o"C"` and then rose (or added) `12^o"C"` and then droped or decreased `8^o"C"`

Thus:

`-23^o"C"+12^o"C"-8^o"C"=-11^o"C"-8^o"C"=-19^o"C"`