I think that it could possibly be 12 feet but at the same time I'm not sure
Answer: Part one (NEGATIVE) Part two is C (EVEN DEGREES OF FOUR OR GREATER)
Step-by-step explanation:
SOLUTION
We have been given the equation of the decay as

So we are looking for the time
Plugging the values into the equation, we have

Taking Ln of both sides, we have

Hence the answer is 4308 to the nearest year