What would be the cost of purchasing 30 t-shirts for the valentine fundraiser

If angle 2=3x +1 and angle 3=2x +4what is angle 2

What is always true when two whole numbers are subtracted?

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?