Question

Which of the following is the formula for the geometric sequence?
1, -8, 64, -512, …
Answer

an=-1(8)n − 1

an=8(-1)n − 1

an=1(-8)n − 1

an=-8(1)n − 1

Answer 1

@zordoloom what do I do?

Answer 2

is it B an=8(-1)n-1

Answer 3

I got that..

Answer 4

@Shadowys give me your opinion

Answer 5

I'm sorry, which is the exponential number?

Answer 6

I'm not sure..

Answer 7

okay, since a general form of any term in a geometric sequence is
\[a_n = ar^{n-1}\]
placing a=1, r=-8/1, ...you get?

Answer 8

I got C an= 1(-8)n - 1

Answer 9

is it right? @Shadowys

Answer 10

Is it right?

Answer 11

@zordoloom I got C.

Answer 12

Hello ?? @Shadowys

Answer 13

yup! lol You're good.