Question

Does someone mind helping me with this problem? Thank you!

Answer 1

-64

Explanation:

Given sequence is -1/2, -1, -2, -4,...

We get, a1 = -1/2

r = 2

n = 8 a8 = a.r^(n-1)

a8 = -1/2 * 2^(8-1)

a8 = -1/2 * 2^7

a8 = -1/2 * 128

a8 = -64