Can 15 percent be written as a ratio

Factor the following expression completely 6x^11-24x^7

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15

Fracisco's game involves 3 green, 2 yellow, 4 red, and 3 black marbles. if he randomly draws three marbles from the bag, without replacement, what is the probability that he will draw yellow, and then red, and then black? a)1/192 b)1/72 c)3/220 d)1/55