AIR MATH

Math Question

A sample of a radioactive isotope had an initial mass of \( 240 \mathrm{mg} \) in the year 1995 and decays exponentially over time. A measurement in the year 2000 found that the sample's mass had decayed to \( 80 \mathrm{mg} \). What would be the expected mass of the sample in the year 2006 , to the nearest whole number?

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