Afurniture store selle a couch for $579. the markup on the couch is 30%. what is the wholesale wsst of
the couch to the store to the nearest cent?

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

Marco states that 7.696696669…… is a rational number because it is a repeating decimal. is he correct? justify your answer.

Which are the possible side lengths of a triangle?