How many solutions does the system of equations have explain 2.5(x+4)=4.1x+16-1.6x

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?

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?