The Amount of Carbon-14 Remaining in a Sample That Weighs

Multiple Choice

The amount of carbon-14 remaining in a sample that weighs A is given by where t is time in years. If tests on a fossilized skull reveal that 99.97% of the carbon-14 has decayed, how old is the skull? Select the correct answer rounded to the nearest integer.

A) 2,629 years old
B) 23,234 years old
C) 0 years old
D) 1,985 years old
E) 28,978 years old