Sasha has some pennies, nickels, and dimes in her pocket. The number of coins is 18. The expression 0.01p+0.05n+0.10d represents the value of the coins, which is $1.14. She has twice as many dimes as pennies. How many of each coin does Sasha have?

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