9/6=x/8 what value of x solves the following proportion

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

Let x = a + bi and y = c + di and z = f + gi. which statements are true?