Question: Suppose n = 1 ? 7 r n - 1 = 7 + 7 r + 7 r 2 + 7 r 3 + cdots

Suppose n=1?7rn-1=7+7r+7r2+7r3+cdots is a convergent geometric series whose sum is9.
Determine the exact value ofr.
r=
Suppose n = 1 ? 7 r n - 1 = 7 + 7 r + 7 r 2 + 7 r

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