Question

Identify the 16th term of a geometric sequence where a1 = 4 and a8 = -8,748.

Answer 1

Any idea??
Hint \(a_n = a_1*r^{n-1}\) where r is ratio

Answer 2

no not really sure @OOOPS

Answer 3

a2 = a1*r
a3 = a2*r= a1*r^2
a4 = a3*r = a1*r^3
and so on,
can you give me the expression of a8=?

Answer 4

what is the ratio though?

Answer 5

just let r for it, we have to find it out from a8

Answer 6

dosnt in =8748

Answer 7

I want you to represent a8 = a1* r ^??