Question

Yesterday morning, the temperature was -11°F. The temperature increased 7°F by noon and then decreased 4°F by nightfall. What was the temperature at nightfall last night?

Answer 1

The temperature at nightfall last night was -8°F.

Step-by-step explanation:

To find the temperature at nightfall last night, we will start with the temperature in the morning which is -11°F. Then we add the increase of 7°F by noon, resulting in -11°F + 7°F = -4°F. Finally, we subtract the decrease of 4°F by nightfall, giving us -4°F - 4°F = -8°F.