4x(3x)^3 in general form

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.