Icleaned 6/9 of my room and my friend cleaned 2/9 of my room how much of my room do we still have to clean?

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Afootball is throw by a quarterback to a receiver