Also what is this really quickk:)

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?