Which of the following represents the most accurate estimation of 664-127

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

(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

Could somebody me with this radical simplification?