Help! I don't understand this.

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Hi, can anyone show me how to do this problem? 100 points for this. in advance