A car dealer is comparing his sales from the past 2 years In 2006 he sold 175

In 2007 he sold 196

Work out the percentage increase in the cars sold.

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