52x=2x 6 how do you solve this problem

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

Answer! if you don’t mind, can you explain