Archaeologists use carbon-14, which has a half-life of 5730 years, to determine the age of artifacts in carbon dating. write the exponential decay function for a 24-mg sample. how much carbon-14 remains after 30 millennia? (hint: 1 millennium = 1000 years)

Here's a web page that will be a big :

the formula you will need is
ending amount = beginning amount / 2^n
where 'n' is the number of half-lives.  (= time / half-life)
so we need to know how much remains after 30,000 years.
"n" would then equal 30,000 / 5,730 equals 5.2356020942
ending amount = 24mg / 2^5.2356020942
ending amount = 24mg / 37.6767363156
ending amount = 0.6369978493 mg

Is it multiple choice