Find the nth term for the geometric sequence with the given values. a2 = 12, r= -, n= 12 2 . . . The 12th term of the sequence is (Simplify your answer.)Find any of the values a, , r, a , n, or S, that are missing from the geometric sequence. r= 3, n=5, S5 = 781 . . . The value of a, is (Simplify your answer. Type an integer or a fraction.)Find a, and S for a geometric sequence with the values given below. 5 3' an 243 , n=6 a, = (Simplify your answer.)