Question

Please help! I'll fan and medal

Find an equation for the nth term of a geometric sequence where the second and fifth terms are -21 and 567, respectively.

Answer 1

an = 7 • (-3)n + 1
an = 7 • 3n - 1
an = 7 • (-3)n - 1
an = 7 • 3n

Answer 2

@freckles

Answer 3

@phi

Answer 4

I think there are formulas to figure this out
Do you have notes on this stuff ?

Answer 5

No this is new

Answer 6

Can you still help? It's my last question

Answer 7

you could test each formula
if you replace n with 2
you should get -21
do any of the formulas give -21 when n=2 ?

Answer 8

C does

Answer 9

@phi