Try another version of this question Get help: Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
A wooden artifact from an ancient tomb contains 30 percent of
the carbon-14 that is present in living trees.
How long ago, to the nearest year, was the
artifact made? (The half-life of carbon-14 is 5730 years.)
years
Enter DNE for Does Not Exist, oo for Infinity 9953