Question

the first term of a geometric sequence is -2. the common ratio is 4. What is the 6th term?

Answer 1

the nth term = ar^(r-1) where a = first term and r = common ratio

Answer 2

* sorry thats ar^(n-1)

Answer 3

Here, a=first term = -2; r = common ratio = 4.
Use cwrw's formula to predict the 6th term (let n=6).
You might want to check your work by actually finding all 6 terms.