Answer:
The correct answer will be:

Step-by-step explanation:
It is given that :
Initial temperature, 
Final temperature,

Time taken :

Change in temperature per hour:

Putting the values of temperatures and time:

The error done by Wen was during calculating the values of fraction.
So, the correct answer is :
instead of
Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:








Answer:
I believe it's the second option!
Step-by-step explanation:
Please correct me if I'm wrong!