The temperature in Anchorage (A) was 9° C below zero. The temperature in Chicago (C) was 1° C below zero and the temperature in Baltimore (B) was 3° C above zero. Which one of the following correctly shows this information on the number line?

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Solution

The correct option is D
Let the temperature above zero be positive and below zero be negative.
The temperature in
Anchorage (A) was 9 °C below zero = -9 °C.
Chicago (C) was 1° C below zero = -1 °C and
Baltimore (B) was 3° Cabove zero = +3 °C

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