Consider an infinite geometric series wi...

Consider an infinite geometric series with first term `a` and common ratio `r`. If its sum is 4 and the second term is 3/4, then (a)`a=4/7, r=3/7` (b). `a=2, r=3/8` (c). `a=3/2, r=1/2` (d). `a=3, r=1/4`

`a=4/7, r=3/7`

`a=2,r=3/8`

`a=3/2, r=1/2`

`a=3, r=1/4`

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