Which expression is equivilent to x + x + x + 2?

You can find the constant of proportionality by finding the ratio of

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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.