What expression is equivalent to 2-y+x/2-y?

What’s the domain of this function? fast

Which set of reflections would carry trapezoid abcd onto itself? a) x-axis, y=x, y-axis, x-axis b) x-axis, y-axis, x-axis c) y=x, x-axis, x-axis d) y-axis, x-axis, y-axis, x-axis

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse