Consider an infinite geometric series with first term ' \( a \) ' a... VIDEO
Consider an infinite geometric series with first term ' \( a \) ' and common ratio \( r \). If the sum is 4 and the second term is \( 3 / 4 \), then:
(A) \( \mathrm{a}=\frac{7}{4}, \mathrm{r}=\frac{3}{7} \)
(B) \( a=2, r=\frac{3}{8} \)
(C) \( a=\frac{3}{2}, r=\frac{1}{2} \)
(D) \( a=3, r=\frac{1}{4} \)
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