Determine if the sequence is geometric. If it is, find the term named in the problem. 25.) 4, 8, 16, 32, ... Find a9 (9 is a lowered power to a)

Question

asked Dec 13, 2021 187k views

1 Answer

Qknight · Answer 1 · 2021-12-18T12:42:59+0000

Answer:

120

Explanation:

Each new term is twice the previous term, so this is a geometric sequence. The applicable formula is

a(n) = a(1)*4*(n - 1)

and so a(9) = 4*4(9 - 1) = 120