Between 10 Pm and 7:36 am the water level in a swimming pool decreased by 12/25 in assuming that the water level at decreased at a constant rate how much did the water level drop each hour

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio