Can u help me with this

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

If jaime wants to find 60% of 320, which table should he use?

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?