Question

Some help? Find an explicit rule for the nth term of the sequence.
1, 3, 9, 27...

Answer 1

fill in the blank

the first term is _______

Answer 2

First term is one, or do you mean term in equation?

Answer 3

first term in the given sequence above

it is 1, so a = 1

Answer 4

the common ratio is _______

Answer 5

3.

Answer 6

so r = 3

Answer 7

from here, you plug in a = 1 and r = 3 into

\[\large a_{n} = a*r^{n-1}\]

to get

\[\large a_{n} = a*r^{n-1}\]


\[\large a_{n} = 1*r^{n-1}\]


\[\large a_{n} = 1*3^{n-1}\]

which is the general nth term

Answer 8

its reeally that simple?

Answer 9

yep