-an-for-the-geometric-sequence-whose-first-term-is-7-and-whose-common-ratio-is-2

Question

Write the general $$n^{th}-$$term formula, ana_n, for the geometric sequence whose first term is 77 and whose common ratio is −2-2.

Accepted Answer

an=7⋅(−2)n−1a_{n}=7\$$cdot(-2)^{n-1}$$

Answer

an=7⋅(−2)na_{n}=7\$$cdot(-2)^{n}$$

Answer

an=−14(n−1)a_{n}=-14\left(n-1\right)

Answer

an=14⋅(−2)n−1a_{n}=14\$$cdot(-2)^{n-1}$$

Write the general nth-term formula, ana_n, for the geometric sequence whose first term is 77 and whose common ratio is −2-2.