How many large cubes flats and longs to make 13,450

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]

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

Here is another math questions. i will keep asking different questions. 4^2x=6