Ihave 1/8 of books are mysteries i have three mistry books how many books do i have it all

Which choice represents the sample space ,s for this event

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

(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