What property describes the number sentence 6 plus 0 equals 6

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39