Find the first term in the sequence when u(subscript)31=197 and d= 10.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

The hockey team has been great! in 2008, they won 20% more games than in 2007 in 2009 they won 50% more games than in 2008 what was their overall percentage increase from 2007 through2008?

Each side length of the hexagons is 1, what’s the area of abc