Answer :
[tex]18 ^{n} =21[/tex]
[tex]log(18) ^{n}=log(21) [/tex]
[tex]n*log(18)=log(21)[/tex]
[tex]n= \frac{log(21)}{log(18)} [/tex]
[tex]n=1.053[/tex]
[tex]log(18) ^{n}=log(21) [/tex]
[tex]n*log(18)=log(21)[/tex]
[tex]n= \frac{log(21)}{log(18)} [/tex]
[tex]n=1.053[/tex]
