The selling price for a classic car is $12,000, which is $500 less than two times its original price. What was the original price of the car?

Don't know how to find x given these segment lengths

Can someone me do math because i am having a breakdown rn because i don’t get it

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