Americium-241 is a radioactive isotope commonly found in ionization-type smoke detectors and has a half-life of 432 years. From a 75-gram sample of americium-241, which equation models the amount remaining after t years? 'A (t) = 75(금) 표 A (t) = 432(}) 'A (1) = 75(1) 푸 A (t) = 432(})#

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Exponential Growth Model

The relation that represents an exponential function is: