Calc II
posted by Sarah .
Carbon14 has a halflife of 5700 years. The charcoal from a tree killed in the volcanic eruption that formed Crater Lake in Oregon contained 59.5% of the carbon14 found in living matter. Approximate the age of Crater Lake.

.595=1.0 e^(.693t/5700)
ln of each side..
ln (.595)=.693t/5700
solve for t in years.