Question

At 6:00 a.m., the temperature outside was 5 degrees below zero. By 10:00 a.m., the temperature had risen 7 degrees. Over the next four hours, the temperature fell 8 degrees. Which number line shows the temperature at 2:00 p.m.?


A vertical number line between -10 and 10 has 20 equal segments with 0 in the middle. A dot is at the second segment between 0 and 10.


A vertical number line between -10 and 10 has 20 equal segments with 0 in the middle. A dot is at the second segment between 0 and -10.


A vertical number line between -10 and 10 has 20 equal segments with 0 in the middle. A dot is at the sixth segment between 0 and 10.


A vertical number line between -10 and 10 has 20 equal segments with 0 in the middle. A dot is at the sixth segment between 0 and -10.

Answer 1

Start: -5. After rising 7°: -5 + 7 = 2. After falling 8°: 2 - 8 = -6.

So the temperature at 2:00 p.m. is -6°, which is shown by the fourth number line (a dot at the sixth segment between 0 and -10).