Question

Find S for the given geometric series.

A_1=.11, A_5=895.956875, r=9.5

Answer 1

I do not know the equations for geometric.

Answer 2

for GP:
\(S_n= A_1 \frac{r^n-1}{r-1}\)
put n=5.
does this help ?

Answer 3

did the n=5 come from a_5?

Answer 4

That helps, thank you :)

Answer 5

yup. welcome :)