Can someone help me?

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?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Nikolas calculated the volume of the prism. his work is shown below.