Mathematics, 03.03.2021 21:00 aoexus

A sample of a radioactive isotope had an initial mass of 350 mg in the year 2009 and decays exponentially over time. A measurement in the year 2015 found that the
sample's mass had decayed to 300 mg. What would be the expected mass of the
sample in the year 2019, to the nearest whole number?
0
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A sample of a radioactive isotope had an initial mass of 350 mg in the year 2009 and decays exponen...