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OpenStudy (anonymous):
Please help. The mass of a radioactive substance follows a continuous exponential decay model, with a decay rate parameter of 3% per day. A sample of this radioactive substance has an initial mass of 2.69kg. Find the mass of the sample after three days. Round your answer to two decimal places. And though the decay rate parameter is 3% per day, the actual decay is not 3% each day.
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