I need to solve for x

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

(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