Answer:
a(9) = 59049
Explanation:
The general term of a geometric sequence is a(n) = a(1)*r^(n - 1), where r is the common ratio.
Here, each new element is found by multiplying the previous one by 3. Thus, r = 3, and the general geometric series for this particular series is
a(n) = 9*3^(n - 1)
The 9th term is a(9) = 9*3(9 - 1) = 9*3^8 = 59049