SOLUTION: Please help me form an equation for the problem below: Carbon-11 decays into boron at the rate of roughly 3.5% per minute. What is the half-life of carbon-11?

Question 973319: Please help me form an equation for the problem below:
Carbon-11 decays into boron at the rate of roughly 3.5% per minute. What is the half-life of carbon-11?
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!
C-11 retains 96.5% per minute.
If initial quantity is 1 unit, then 1 minute passing,

, and computing this,

The decay equation is .

HALF-LIFE

Let and , and solve for t.
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