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Infinite geometric series

AP.CALC: LIM‑7 (EU), LIM‑7.A (LO), LIM‑7.A.3 (EK), LIM‑7.A.4 (EK)
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If the following infinite geometric series converges, find its sum.
5, plus, start fraction, 15, divided by, 4, end fraction, plus, start fraction, 45, divided by, 16, end fraction, plus, point, point, point
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