Question

Which is the recursive formula for the following Geometric Sequence?

20, 80, 320, 1280,......

A. f(1) = 20;
f(n) = f(n-1). 4, for n > 2
B. f(1) = 20;
mook
f(n) = f(n-1) - 2, for n > 2
ook
mily
C. f (1) – 20;
f(n) = f (n − 1). (1), forn > 2
D. f(1) = 20;
f(n) = f(n-1). 41-1, for n > 2
HELPPPP

Answer 1

The recursive formula for the following geometric sequence is A.