Please help.

Find the length of cu, the triangles are similar.

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)