Problems 1 -4, write the first five terms of the geometric sequence. Determine the common ratio and write the nth term of the sequence as a function of n. 1. a1 = 8; ak+1 = 2ak 4 a1 = 12; ak+1 = -7 Problems 5 - 8, write an expression for the nth term of the geometric sequence. Then find the indicated term. 6 01 = 1;r = V2;n =12 5 01 = 64;1 = -=;n = 10