Sorry I am getting errors with latex so ill post in text form, I am getting an answer but I do not think it is right hopefully someone can tell me where I went wrong.

2 * (0.1)^(x+1) = 25

to clarify 2 times 0.1 to the power of x +1 equals 25

I got :

2 * x + 1 * log 0.1 = 25

2 * x * log 0.1 = 24

x * log 0.1 = 12

x = 12 / log 0.1

x = -12

Any input would be appreciated. Thanks