Which expression has a value of 36, when x= 4 and y= 7. a: 2xy, b: 2x + 4y, c: 6y - x, d: 12x - 2y. which one should i choose

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.

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.

Grandpa ernie is shrinking! over the past 4 years his height decreased by a total of 2.4 cm.it decreased by the same amount each year. what was the change in grandpa ernie's height each year