(Middle school math) Work is attached. Please help 25 points. These questions are together btw!!

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

What are the domain and range of f(x)= -log5(x+2)

What is the equivalent fraction for the following fraction using 5 as the multiplier? 1/2