SOLUTION: Find the correct equation for this nth root term. 200, 50, 12.5 ... Equations: https://s32.postimg.org/qwubiv651/eq1.png TY!

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Question 1041442: Find the correct equation for this nth root term.
200, 50, 12.5 ...
Equations: https://s32.postimg.org/qwubiv651/eq1.png
TY!
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
It can't be a, because 200* 4^n-1 will be too large
200*(1/4)^(n-1) will give 50 for n=2 and it will give 12.5 for n=3
That is d.
If the signs changed, you would then look closely at (-1/4) ratios.