Finzfan17 Finzfan17 22-06-2017 Mathematics contestada Which of these sequences is a geometric sequence? A) 1, 2, 4, 7, 11, 16, 22, … B) 2, 4, 8, 14, 22, 38, … C) 3, 6, 9, 12, 15, 18, 21, … D) 3, 9, 27, 81, 243, 729, …