Tito's Mom is 38, his father is 42, his sister is 15 he is 13 and has twin brothers aged 6. What is the median age of Tito's family?

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