(adsbygoogle = window.adsbygoogle || []).push({}); Sequences and series help.....

1. The problem statement, all variables and given/known data

3+3a+3a^2+...........∞ is = to 45/8 where a>0,then a is...?

3. The attempt at a solution

since it is a g.p so using

S=(a(rn-1))/(r-1) for r>1

ive all the values except for "n"..can someone help...:/

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# Homework Help: Sequences and series help .

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