Janelle wants to know how many students at her Albany Middle School follow major league baseball. Which sampling method will give Janelle the best answer to predict outcomes?

Bugs bunny was 33 meters below ground, digging his way toward pismo beach, when he realized he wanted to be above ground. he turned and dug through the dirt diagonally for 80 meters until he was above ground

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?