PLS HELP IM MARK BRAINLIEST AND U GET POINTS :)

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

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?

Quick graph the line for y+2=32(x+4) on the coordinate plane. does anyone know the cordinates will mark brainliest.