Which expression is equivalent to 5 x + 10 y minus 15?
A)5 (x minus 2 y minus 3)
B)5 (x + 5 y minus 10)
C)5 (x + 2 y minus 3)
D)5 (x + 2 y minus 15)

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?

Find the distance between the pair of points a(-1,8) and b(-8,4)

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.