Posted by Kim Johnson on .
An artifact was found and tested for its carbon14 content. If 74% of the orginal carbon14 was still present, what is its probable age (to the nearest 100 years)? (Carbon14 has a half life of 5730 years).

Algebra 
Steve,
(1/2)^(t/5730) = .74
t = 5730 * log(.74)/log(0.5)