Rico went to the store to buy a pair of pants because there was a 30 percent off all the merchandize sale. when he got to the store he learned that purchases made before noon would receive an additional discount of 20 percent off the sale price. if the pants he picked out cost p dollars and he purchased them before noon, write an expression for the final cost of the pants.

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.