Carbonâ€"14 is a radioactive isotope that decays exponentially at a rate of 0. 0124 percent a year. How many years will it take for carbonâ€"14 to decay to 10 percent of its original amount? The equation for exponential decay is At = A0eâ€"rt. A. 8. 06 years B. 18. 57 years C. 8,064. 52 years D. 18,569. 23 years.
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Carbonâ€"14 is a radioactive isotope that decays exponentially at a rate of 0. 0124 percent a year....
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