Explica cómo se debe dividir cada unidad para ubicar en la misma recta numérica los números racionales Ayuda porfa

How many solutions does the nonlinear system of equations graphed below have?

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

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?