Each cup costs $6 and each bowl costs $10.if you want to spend exactly $72,which equation in standard form models this situation. let c represent the number of cups you buy, and b represent the number of bowls you buy

Which one ? is the answer and how to find this answer

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.

If f(x)=x+7 and g(x)=1/x what is (fog)(x)