Mathematics, 04.05.2021 06:00 DnsMonsteR7712

A sample of a radioactive isotope had an initial mass of 620 mg in the year 2003 and decays exponentially over time. A measurement in the year 2005 found that the sample's mass had decayed to 390 mg. What would be the expected mass of the sample in the year 2010, to the nearest whole number?

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