Question

Write the explicit formula for the geometric sequence.

a1 = -5 a2 = 20 a3 = -80
A. an = -5 • (-4)n

B. an = -5(-4)n-1

C. an = -4(-5)n-1

D. an = -5 • (4)n

Answer 1

do you know the formula ??

Answer 2

I don't @Nnesha ...

Answer 3

ok no problem
so formula is

Answer 4

were a1 is first term
and r mean ratio
n mean next term the tern you need to find so plug that into the formula

Answer 5

did you understand ??

Answer 6

Not really, I'm horrible at algebra. =/

Answer 7

what is a1 in your question ??

Answer 8

-5 ? @Nnesha

Answer 9

C.? @Nnesha

Answer 10

nope
its
canot

be
C
bec
your
first
tern
is-5
but
choice
have-4
as
first
ter

Answer 11

hmmmm

Answer 12

hey
don't
laugh
space
button
nnnotwroking

Answer 13

lol! It's okay. =)

Answer 14

wait
i
got
ylaptopback
so
lete
loggon
onthatloptop

Answer 15

okay.

Answer 16

I'm thinking B. @Nnesha ...

Answer 17

okay really sorry about that :(