Posted by Chris on Thursday, April 28, 2011 at 5:45pm.
2^(x+1) = 5^2x. Take log of both sides: (x+1)log2 = 2xlog5, 0.301X + 0.301 = 1.398X, 0.301X - 1.398X = -0.301, -1.097X = -0.301, X = 0.2744.