edog5355 edog5355 29-02-2024 Mathematics contestada What are the values of a 1 and r of the geometric series 1, 3, 9, 27, 81? 1) a 1 = 1 and r = one-third 2) a 1 = one-third and r = 1 3) a 1 = 1 and r = 3 4) a 1 = 3 and r = 1