Problem 3 please 6th grade

Plot the intercepts to graph the equation

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?

Quickly multiply and simplify polynomials (x – 4) (x^2 – 5x – 6)