Question

I have no idea how to set this problem up. Can I get some help please?

Answer 1

G3 means group 3
G3=16+6 (2)=28
G4=16+6 (3)=34
G180=16+6 (179)=1090

Answer 2

I think its something like 
(sigma notation) where n=1 with limit to 180 all equal to 16+6(n+1)
maybe a little too complicated