Question: The technique of carbon 14 (14C) dating is used to determine the age of archaeological & geological specimens. The formula T = -8310 in x is sometimes used to predict the age T {in years} of a bone fossil, where x is the percentage {expressed in a decimal} of 14C still present in the fossil.

[A] Approximate the percentage of 14C present in a fossil that is 10,000 years old.
[B] Calculate the age of a bone fossil that contains 4% of the 14C found in an equal amount of carbon in present day bone.