Concept explainers
The half-life of radium-226 is 1620 yr. Given a sample of 1 g of radium-226. the quantity left Q(t) (in g) after t years is given by
a. Convert this to an exponential function using base e.
b. Verify that the original function and the result from part (a) yield the same result for Q(0), Q(1620), and Q(3240). (Note: There may be round-off error.)
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College Algebra & Trigonometry Student Solutions Manual
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