An archeologist extracts a sample of carbon from an ancient ax handle and finds that it emits an average of 10 beta emissions per minute. She finds that the same mass of carbon from a living tree emits 40 beta particles per minute.
Knowing that the half life of carbon-14 is 5730 years, she concludes that the age of the ax handle is
a) 2865 years
b) 5730 years
c) 11460 years
d) 17190 years
Please respond using the discussion topic ax