Adiner has booths and counter seating. each booth can seat 4 people. another 15 people can sit at the counter. which expression shows how many customers can be seated in the diner?

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