Our galaxy contains roughly 25 stars. how many billion is this?

Need this asap if anyone can i would be very grateful. if you could show workings that would really

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

(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