What is the prime factorization of 80?

Can someone explain the elimination method to me for this problem?

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)