Answer: C. 
Step-by-step explanation:
Given: The formula below can be used to find D, the difference in temperature between the pan and the room after t minutes.

At t= 8 minutes, we get

The approximate temperature of the pan after it has been away from the heat for 8 minutes= 
she walked 12 and a half meter every day 12.5
Answer:
The square root of -100 is 10i
Step-by-step explanation:
The greatest common factor( GCF) of 36 and 84 is 12.
The number is 79 that is prime