The numbers of chocolate
chips in 7 cookies are shown.
5,7,7,9,12,16,21
what is the mean number of
chocolate chips for these 7
cookies?

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