The amount of a radioactive substance remaining as it decays over time is A = A0(0.5)t/h ,where a represents the final amount Ao represents the original amount, t represents the number of years, and h represents the half-life of the sibstance.
The half-life of the radioactive isotope carbon-14 is 5,730 years. Approximately how many years will it take a 50-gram mass of
carbon-14 to decay to 5 grams?