5) Dan and Joan were able to clean the attic in 7 hours together, It takes Joan 9 hours to complete the same job alone. Without help, how long
would it take Dan to complete the same job?

(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