Which would the phrase "the difference between a number and 5" look like as a variable expression?

Geometry ? i don't know how to do any of these.

Which rational number could be graphed between -4 and -5

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