SOLUTION: The​ half-life of radium is 1690 years. If 60 grams are present​ now, how much will be present in 870 ​years?

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Question 1153382: The​ half-life of radium is 1690 years. If 60 grams are present​ now, how much will be present in 870 ​years?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
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Question asks for y if p is 60 and x is 870.