Will give a

determine whether the sequence below is a geometric sequence and, if so, find a formula that describes the sequence.

3, 1, 1/3, 1/9, …

a.
a(n)=3x(1/3)n-1
b.
a(n)=1/3(3)n-1
c.
a(n)=3x(n-1)^3
d.
the sequence is not a geometric sequence.

I believed it b because the numbed are being divided by 3 every time and I remember leaning that it needs to end with (n-1) I really hoped this helps

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?