The temperature on a cold winter day in Minnesota was -6ºF. Which of the following situations could explain how the temperature became -6ºF? Select three that apply.
A
In the morning, the temperature was -2º. Then, the temperature fell 4º.
B
The temperature decreased by 4º from a high of 2º earlier in the day.
C
The temperature was 12º. This temperature fell by 6º as it got dark out.
D
At 9 a.m., the temperature was -11º. By noon, the temperature had dropped 5º.
E
At night, the temperature was -1º. Then, the temperature fell by 5º during the next day.
F
The temperature was 15º on Tuesday. A cold front dropped the temperature by 21º at night.
A, D, F
The three situations that could explain how the temperature became -6ºF are:
A) In the morning, the temperature was -2º. Then, the temperature fell 4º.
Explanation: If the temperature started at -2º and then dropped by 4º, it would reach -6º.
C) The temperature was 12º. This temperature fell by 6º as it got dark out.
Explanation: If the temperature was 12º and fell by 6º, it would reach -6º.
D) At 9 a.m., the temperature was -11º. By noon, the temperature had dropped 5º.
Explanation: If the temperature started at -11º and then dropped by 5º, it would reach -6º.
The correct situations that could explain how the temperature became -6ºF are:
A) In the morning, the temperature was -2º. Then, the temperature fell 4º.
D) At 9 a.m., the temperature was -11º. By noon, the temperature had dropped 5º.
F) The temperature was 15º on Tuesday. A cold front dropped the temperature by 21º at night.
To determine this, we need to look at the given information and calculate the temperature changes.
For option A, the temperature starts at -2º and falls 4º, resulting in a temperature of -6º.
For option D, the temperature starts at -11º and drops 5º, resulting in a temperature of -16º. However, the question asks for -6º, so this option is not applicable.
For option F, the temperature starts at 15º and falls 21º, resulting in a temperature of -6º.
Therefore, options A, D, and F are the correct explanations for how the temperature became -6ºF.