Question

logarithms

solve for x

5^(x-1) = 9

Answer 1

take the log base 5 of each side

x-1=log5 9=log10 9 /( log10 5)

http://www.sosmath.com/algebra/logs/log4/log43/log43.html

Answer 2

?

can i do
x-1= log9/log6
x=(log9/log5) + 1 ?