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Mathematics 21 Online
OpenStudy (anonymous):

A laboratory has 20 grams of a radioactive substance that decays in such a way that 't' days later the # of grams left will be y=20(1/10)^(t/15). How much would be present? a. 2.00 grams b. 4.31 grams c. 7.85 grams d. 11.3 grams

OpenStudy (anonymous):

specify t for which u want the answer

OpenStudy (anonymous):

t is the days. and thats all there was to the question.

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