Need help figuring this out. 75 points for correct answer.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Which graph represents the parent function of y=(x+2)(x-2)

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?