Answer:
B.
Step-by-step explanation:
Because 14/2 is 7
10/5 is 2 as well
We can find the acceleration via

We have


Then by definition of average acceleration,

so that


We alternatively could have found the time without knowing the acceleration. Since acceleration is constant, the average velocity is

Then


Use calcutlator and it all smushed up i can barley see it
Change in temperature = 12 - (-13) = 12 + 13 = 25
Number of hours = 25/5 = 5 hours.
Required time = 4 am + 5 hours = 9.am