SOLUTION: The half-life of a substance is 7 hours, Using A=A0eKT, Find K

Question 966028: The half-life of a substance is 7 hours, Using A=A0eKT, Find K
Answer by josgarithmetic(39615) (Show Source): You can put this solution on YOUR website!
This, A=A0eKT, does not mean what you want it to mean.

THIS means what you want, using pure text: A=A[0]e^(KT)

Inside the rendering tags, you find .

Now to solve for K, take logarithms of the left and right sides, and then substitute appropriate values:

Then substitution,
.
.

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