I need help on this ALEKS

How are sas and sss used to show that two triangles are congruent?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

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