Can someone help me with my geometry test on thursday?

Find the value of x for which abcd must be a parallelogram -9-6x x-30

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,