1. The problem statement, all variables and given/known data Find the sum of 9 terms of the series 3 + 3^(4/3) + 3^(5/3) + ... 2. Relevant equations I'm just learning sequences and series and senior high school level. I'm finding it hard to apply a, ar, ar^(n-1), ... to this. a = 3. I don't know how to find common ratio. I'm confused. Once I know r I can apply the standard formula for summing the series. 3. The attempt at a solution 1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution Any help will be greatly appreciated.