Answer:
Im 99% sure it is D but the graphs are hard to see
Step-by-step explanation:
The answer is 38.8 repeating. Might as well just round it
Answer:

Step-by-step explanation:
Using the formula for the exponential decay that is
, we have N=
,
and k=0.1374.
Thus,
becomes



Taking log on both sides, we get




Choice B would be the correct answer. I hope that helps! :D