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OpenStudy (anonymous):
A sample of 250 grams of radioactive substance decays at a rate of 34% per year. Write the equation for radioactive decay of this substance.
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OpenStudy (anonymous):
Exponential decay: A(1 - r)^t A = starting amount r = rate of decay, expressed as a decimal t = time (in years, etc.)
OpenStudy (anonymous):
In this problem, r = rate of decay, is 34% or .34
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