The question asks for Vo

.

I tried using KVL which got me

26 + 2Va -2I - 4Vx - 9I = 0 and since Vx = 9I

26 + 2Va - 47I = 0

Then I thought Va = 2Va - 2I which means Va = 2I

Substituting in gives I = 0.60465A and Vo = 2.42V.

Of course, it's wrong. Either I messed up the signs or I completely screwed up with Va...

Any help is appreciated, thanks!