You can
put this solution on YOUR website!THE FORMULA FOR FINDING THE Nth TERM OF A GEOMETRIC SERIES IS:
An=AR^(n-1) A IS THE FIRST TERM, n IS THE TERM TO BE FOUND & R IS THE RATIO:
IN YOUR CASE THE RATIO IS (2X+1).
You can
put this solution on YOUR website!look at the differences between terms ... 3, 6, 12, 24, 48, 96
... the difference is doubling, so 2 is being raised to a sequential power
look at the terms ... 3-1, 3*2-1, 3*4-1, 3*8-1, 3*16-1, etc.
... 3*(2^0)-1, 3*(2^1)-1, 3*(2^2)-1, 3*(2^3)-1, etc.