Best Publishing Company Ever pays its authors really well. For the first 10,000 copies of a book sold, it pays the author $1 per book royalty on the sales. For every copy over 10,000 but less than 50,000, it pays
$1.25 royalty. Once a book sells 50,000 copies sold, they pay $2 royalty. Write a function f(x) that relates
the royalties paid to the number of copies of a book sold?

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.