SOLUTION: the half-life of Rubidium-87 is about 48.8 billion years A. deterimine the value of k and the equation of decay for rubidium-87

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Question 870153: the half-life of Rubidium-87 is about 48.8 billion years
A. deterimine the value of k and the equation of decay for rubidium-87
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
Starting from A=I%2Ae%5E%28-kt%29, I for initial amount, A for amount after time t,
I can be picked arbitrarily as 1, and then A=1/2.

1%2F2=1%2Ae%5E%28-k%2A48.8%29.
Solve for k.

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