you bought some tile that cost $4.00 per square foot and some carpet that cost $2.00 per square foot. A total of 2500 ft.² was purchased for $6800. Your friend thought that you purchased 1600 ft.² of tile, and 900 ft.² of carpet. Decide if your friend is correct. If your friend is correct explain why. If your friend is not correct, explain the error for a reason

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.