Shley solved the exponential equation 3x+1 = 15 and her work is shown below. what is the first step she did incorrectly? step 1: log 3x+1 = log15 step 2: (x + 1)log 3 = log15 step 3: x + 1 = log 15 over log 3 step 4: x+1 = 2.708050 over 1.098612 step 5: x + 1 = 1.418858 step 6: x = 0.418858