1 - 5. The sum of a number and 9 is 21. Find the number. 1. Representing the unknown: 2. Forming an equation: 3 - 4. Solving the equation: 5. Checking:

(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