is the formula for the nth term of the geometric sequence 5, 15, 45, 135, ? A. 2. = 4(3)! B. 2. = 5(3) C 2. = 6(4) ! D a. = 7(4) = 11. In the geometric sequence 2. = 8(3)"), find an when n is equal to 1 AO B.3 C.5 D.8 12. Find the first term of a geometric sequence whose third term is 16 and whose sixth term is 0.0128 A. 20 B. 40 C. 60 D. 80 13. Find the sum of an infinite geometric sequence whose first term is 8 and whose common ratio is 0 25. А. B В. ce D 30 32 36 2 3 5 14. What is the sum of the first 101 terms of a geometric sequence whose first term is 12 and whose common ratio is -I? A 12 B. 12 C 1210 D. 12102