Question

HELP ME
Which of the following recursive formulas represents the same geometric sequence as the formula an = 3 • 3n - 1?

A. an = 9 + an - 1
B. an = 3 + an - 1
C. an = 3 • an - 1
D. an = 9 • an - 1

Answer 1

@peachpi

Answer 2

@welshfella

Answer 3

is that an = 3*3*n-1? doesn't look like it

Answer 4

its 3*3^n-1

Answer 5

you mean 3*3^(n-1)

Answer 6

yea

Answer 7

well, geometric series is define as a(n) = r * a(n-1), where r is the common ratio

Answer 8

r is 3

Answer 9

yes

Answer 10

so its either b or c

Answer 11

what is the first term of the sequence?

Answer 12

3?

Answer 13

actually it doesn't matter. It's B

Answer 14

thx

Answer 15

SORRY IT'S C!!