A radioactive substance decays at a continuous rate of 14%
Chapter , Problem 4.5.47(choose chapter or problem)
A radioactive substance decays at a continuous rate of 14% per year, and 50 mg of the substance is present in the year 2009. (a) Write a formula for the amount present, (in mg), years after 2009. (b) How much will be present in the year 2019? (c) Estimate when the quantity drops below 5 mg.
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