Question

Find an explicit rule for the nth term of the sequence.

9, 36, 144, 576, ...

an = 9 • 4n - 1

an = 4 • 9n - 1

an = 9 • 4n

an = 9 • 4n + 1

Answer 1

first of all what do u see as relation between each consecutive term?

Answer 2

i have no idea

Answer 3

Lol...It is a G.P

Answer 4

With Common Ratio 4

Answer 5

9*4=36
36*4=144

Answer 6

nw u understand ?

Answer 7

okay

Answer 8

nth term= \(\large a r^{n-1}\)

for a GP

Where a is first term
r is common ratio

Answer 9

nw tell me what will be the answer?

Answer 10

2304

Answer 11

an = 9 • 4n

Answer 12

try again ? ar^n-1 !!

Answer 13

remember

Answer 14

@miley23 do u get it ?

Answer 15

an = 4 • 9n - 1

Answer 16

why so ?

Answer 17

look at the formula !!!

Answer 18

a comes first !

Answer 19

an = 9 • 4n - 1

Answer 20

finally :)

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Answer 21

thanks