B.linear pair or you can also choose D
The answer is sometimes, only if the trapezoid is an isoceles trapezoid.
A readymade cube or a cube that you can make with paper and wood sticks?
A horizontal translation is expressed by transforming

If
is positive, the function is translated to the left. If
is negative, the function is translated to the right.
So, a 3-units left shift is given by
. So you have

There are many things that will equal to 500
For Example: 1000 - 500 = 500
Or 800 - 300 = 500