Pls help!! would be greatly appreciated<3

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

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.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.