Question

on friday, the temperature was 82°f. the temperature changed by -2°f on saturday, and then it changed by 2°f on sunday. what was the temperature on sunday? how did the temperature change? 86°f; the temperature increased 4 degrees. 82°f; the temperature did not change. 84°f; the temperature increased 2 degrees. 78°f; the temperature decreased 4 degrees.

Explanation:

Step1: Calculate Saturday's temperature

The initial temperature on Friday was $82^{\circ}F$. It changed by $- 2^{\circ}F$ on Saturday. So, Saturday's temperature is $82+( - 2)=82 - 2 = 80^{\circ}F$.

Step2: Calculate Sunday's temperature

The temperature on Saturday was $80^{\circ}F$ and it changed by $2^{\circ}F$ on Sunday. So, Sunday's temperature is $80 + 2=82^{\circ}F$.

Step3: Calculate the overall temperature change

The initial temperature was $82^{\circ}F$ and the final temperature on Sunday was also $82^{\circ}F$. So the temperature change is $82-82 = 0^{\circ}F$.

Answer:

B. $82^{\circ}F$; The temperature did not change.