What angle relationship describes ∠UQR and ∠WRT?

A. Alternate interior angles
B. Alternate exterior angles
C. Corresponding angles
D. Vertical angles

What is the percent of increase for a population that changed from 438,000 to 561,000

Simplify the expression. -2/5(10+15m-20n)

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?