The ratio 3/5 to 1/7 has what unit rate?

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?

41/17 as a decimal rounded to the nearest hundredth

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0