Triangle ABC has a vertices located at A(6,8) B(3,2) and (3,8)on the coordinate grid

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?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Wrote and expression for the difference of p and 4