10x - 2y = 9
10x - 7y =-18

Graph the equation by plotting point x=2

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

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?