Find each missing value. (Look at picture, and only for C because i did the others already.)

Use set builder notation to represent the following set: { -3, -2, -1, 0}

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

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?