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 temperatures

Initial temperature $T_1 = 18^{\circ}F$, final temperature $T_2=- 9^{\circ}F$.

Step2: Calculate temperature - change formula

The formula for temperature change $\Delta T=T_2 - T_1$.

Step3: Substitute values

$\Delta T=-9 - 18$.

Step4: Perform subtraction

$\Delta T=-27^{\circ}F$.

Answer:

$-27$