Gina bought 2.3 pounds of red apples and 2.42 pounds of green apples. they were on sale for 0.75 a pound. how much did the apples cost altogether

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