Question

Geometric Sequences (comments).

Answer 1

Idk what exactly you are looking for, but i can give you a couple of formulas.
\[\huge {\color{blue} {t_n=t_1\times r ^{(n-1)}} }\]
to just find the difference if you know 2 consecutive terms, then,
\[\huge {\color{blue} {\frac{t_n}{t _{(n-1)}}} }\]

Answer 2

t n is the nth term,
t 1 is the first term,
r is the common ratio.

Answer 3

Thanks. The top formula was the one I needed and it helped.