Hello! How are you today?
This will take me a long time, but...

Answer:
Option D (7, -3)
Step-by-step explanation:
We know that the general equation of an ellipse has the form:

Where the point (h, k) are the coordinates of the center of the ellipse
In this case the equation of the ellipse is:

Then

So The coordinates of the center of the ellipse are (7, -3)
Answer:
1 ft. by 1 ft. by 1 ft.
1 mm by 1 mm by 1 mm
Step-by-step explanation:
it's a cube, all sides are the same :)