Which composition of transformation will crate a pair of similar not congruent triangles

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?

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left