The first five terms of a sequence are given below.
1 3 9 27 81
The sequence continues. Which expression represents the nth term of the sequence?
3^n-1
3n-2
3n
3^n

Question

The first five terms of a sequence are given below.
                1   3   9   27   81
The sequence continues. Which expression represents the nth term of the sequence?
3^n-1
3n-2
3n
3^n

amistre64 · Answer

depends on how your material defines the starting value for n

anonymous · Answer

?

amistre64 · Answer

different authors start a sequence differently;  some with n=0, others with n=1

so if you do not know how your specific author is defining the starting value of n, the rest is pretty much ambiguous

anonymous · Answer

i dont know

amistre64 · Answer

then you will need to find out;  when you know the starting value for n ... test each option to see with one produces the correct sequence

anonymous · Answer

the first term is 1 and the second term is 3 what do you do to get there using one of the choices?