brentcollins5322 brentcollins5322 25-02-2020 Mathematics contestada What are the values of a, and r of the geometric series? 1+3+9+ 27 + 81 0 2 = 1 and ra 0 a, - and r-1 O Q4 - 1 and r-3 O a. - 3 and r - 1