24 ten thousands equals

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

The surface area of the triangular prism is .