SOLUTION: i would like to ask how to find the decay rate in the exponential decay formula

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Question 1111331: i would like to ask how to find the decay rate in the exponential decay formula
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!

If your decay function has this form:
+y+=+Ae%5E%28-kx%29+

then you will need two points for x,y in order to solve for constants A and k. You will want
to take logs of both sides to make the equations linear:
ln(y/A) = -kx