The numbers 13, 28, 43, 58, … are written in order in a book, 20 to a page, beginning on page 1. The number 16 258 will be written on what page?

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