1. The problem statement, all variables(adsbygoogle = window.adsbygoogle || []).push({});

a sample polonium-218 decays at A(t)=100(.5)^t/3.1

determine how many minutes it will take to decay to 30%

2. Relevant equations

log(a)/log(b)

3. The attempt at a solution

.3=100(.5)^t/3.1

.3/100=.5^t/3.1

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# Homework Help: Simple exponent variable

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