A radioactive substance decays so that after t years, the amount remaining, expressed as a percent...

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A radioactive substance decays so that after t years, the amount remaining, expressed as a percent of the original amount, is A(t) = 100(1.3). a) What is the half-life for this substance? Round to 2 decimal places. [A-5] b) Determine the rate of decay after 10 years. Round to 2 decimal places. A radioactive substance decays so that after t years, the amount remaining, expressed as a percent of the original amount, is A(t) = 100(1.3). a) What is the half-life for this substance? Round to 2 decimal places. [A-5] b) Determine the rate of decay after 10 years. Round to 2 decimal places.