Which could be the function graphed below?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

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?

Ineed i been stuck on this question since yesterday