1. The problem statement, all variables and given/known data Determine whether the series is either Converge or Diverge, if it's convergent, find its sum ∑ from n=1 to ∞ of (1+2^n)/(3^n) 2. Relevant equations 3. The attempt at a solution Steps: 1) i replaced the (1+2^n) to just (2^n) and my equation behaves like ∑ (2/3)^n which the Radius (2/3) < 1. So it's Convergent. 2) I found that my leading term was 2/3 by n=1 3) i plug everything in to my Geometric series formula (2/3)/(1-(2/3), thus giving me an answer of 2. Problem: the Books answer was 5/2. Can anyone help me out? Thanks!