Linear model

Hi, can anyone help me solve this please?

25 = 42.6 - 0.37^x

Thanks!

I make it:

0.37^x = 17.6

But when I try to solve that using logarithms to base 10, I get:

x log(0.37) = log(17.6)

I then divide both by log(0.37) to get:

x = -2.884.......

Which is completely wrong. I know the answer needs to be between 40 and 60 from other figures I have in the graph and other answers I've obtained. I think I'm doing something wrong in the algebra in the 1st part

Oh I've worked out my error now! The T wasn't a power!