Select the relationship that does represent a function.

Can some one me with these questions

The area of the map is the product of the length and width. write and expression for the area as the product of the two binomials do not multiply

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters