The figure is a parallelogram. One diagonal measures 28 units.

A parallelogram is shown. It has side lengths 21, 20, 21, and 20. The length of a diagonal is 28.

What are the domain and range of the function below? a) domain: (-4,0) range: [-2,infinity) b) domain: (-3,0) range: [-2,infinity) c) domain: (-infinity,infinity) range: [-2, infinity) d) domain: [-2,infinity) range: (-infinity,infinity)