The weight of an object on Mars is about 2/5 its weight on Earth. How much would an 80 1/2 pound dog weight on Mars?

How do you do this geometry problem

On a architect's drawing of a house, 1 inche representa 1.5

(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