Question

The temperature at noon on a cold December day was -1°F. At 1:00, the temperature decreases 4°F. By 2:00 it went up another 2°F and at 3:00 it went down 1.5°F. What is the final temperature 3:00?

Answer 1

The temperature at 3:00 is -4.5 F.

`-4.5^0F`

Step-by-step explanation:

From the question, the initial temperature is -1 F

then

At 1:00, the temperature decreases 4°F

we have;

`\begin{gathered} -1^0F-4^0F \\ =-5^0F \end{gathered}`

By 2:00 it went up another 2°F.

`\begin{gathered} -5^0F+2^0F \\ =-3^0F \end{gathered}`

At 3:00 it went down 1.5°F.

`\begin{gathered} -3^0F-1.5^0F \\ =-4.5^0F \end{gathered}`

Therefore, the temperature at 3:00 is -4.5 F.

`-4.5^0F`