Find the ninth term of the geometric sequence, given the first term and common ratio.

Question

a1=1 and r=-1/3

answer has to be a fraction

Answer 1

a₉ = 1(-1/3)⁸

Can you calculate and answer?

Answer 2

a_n=a₁r^n-1

a₉=1(-1/3)⁸

-3⁸=6561

a₉=1(1/6561)

a₉=1/6561