Fred earns $16.50 an hour for overtime. he worked overtime on monday and thursday this week. on monday, he worked 4 hours of overtime. his total overtime pay for the week was $123.75.

write and solve an equation to find the number of overtime hours, h, fred worked on thursday.

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.