Question

at 2:00 pm the temperature is 18°f. at 10:00 pm the temperature is -9°f. what is the change in temperature from 2:00 pm to 10:00 pm?

Explanation:

Step1: Identify initial and final temps

Initial temp = $18^{\circ}F$, final temp = $- 9^{\circ}F$.

Step2: Calculate temperature change

Change = final - initial = $-9 - 18$.
Since $-9-18=-(9 + 18)=-27$.

Answer:

$-27$