Solve for u
u=\frac{5\times 2.2^{n}}{1122}
Solve for n
n=\frac{-\ln(u)+\ln(\frac{5}{1122})}{\ln(\frac{5}{11})}
u>0
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102u=2.2^{n-1}
The equation is in standard form.
\frac{102u}{102}=\frac{2.2^{n-1}}{102}
Divide both sides by 102.
u=\frac{2.2^{n-1}}{102}
Dividing by 102 undoes the multiplication by 102.
u=\frac{5\times 2.2^{n}}{1122}
Divide 2.2^{-1+n} by 102.
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