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42. If the half-life of an exponentially decaying substance is 5.05 years, how long will it take for the substance to decay to 5 of

42. If the half-life of an exponentially decaying substance is 5.05 years, how long will it take for the substance to decay to 5 of its original value? A. 20.996 years B. 21.826 years C. 14.252 years D. 17.330 years E. 30.818 years

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