Question

Math god help me please!!!

Answer 1

I believe its the last one but don"t mark my words. 

Answer 2

`a_(n)=ar^(n-1)`

`a_(10)=(1)/(3)3^(10-1)`

`a_(10)=(1)/(3)3^(9)`

`a_(10)=(19683)/(3)`

`a_(10)=6561`