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A radioactive isotope decays rapidly with a half-life of 4 minutes. For a 12 minutetest, technicians need at least 6 grams of the isotope to

A radioactive isotope decays rapidly with a half-life of 4 minutes. For a 12 minutetest, technicians need at least 6 grams of the isotope to remain at the end of thetest. How much must they start with?a) 48 gramsb) 12 gramsc) 24 gramsd) 96 grams

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