Astore sells t-shirts in 12 different colors. each color is available in 3 different sizes. which expression gives the total number of unique t-shirts that are available

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