Answer:
Jim will be paid $150 or 30% to his account.
Step-by-step explanation:
Have a great day :)
The amount of substance left of a radioactive element of half life,

after a time, t, is given by:

Given that <span>potassium-40 has a half life of approximately 1.25 billion
years.
The number of years it will take for 0.1% of potassium-40 to remain is obtained as follows:

Therefore, </span><span>the maximum age of a fossil that we could date using 40k is
12.5 billion years.</span>
Answer:
942.48
Step-by-step explanation:
V=πr^2h=π·5^2·12≈942.4778