The graphs below have the same shape. what is the equation of the blue graph?

I'm terrible at math any here is appreciated.

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?

Determine which postulate or theorem can be used to prove that lmn =nmo