8TH GRADE MATH! You dont have to explain it if you dont want to :> but i fr need help

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

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?

Which value of y will make the inequality y< -1 false?