Question: Please help me to answer the 2 questions below. I would appreciate it. And explain. This is Calculus 1 A sample of a radioactive substance

Please help me to answer the 2 questions below. I would appreciate it. And explain.

This is Calculus 1

A sample of a radioactive substance decayed to 95.5% of its original amount after a year. (Round your answers to two decimal places.) (a) What is the half-life of the substance? 15.05 yr (b) How long would it take the sample to decay to 10% of its original amount? 50.15 X yr

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