Question

I Will Mark it the brainiest  

Answer 1

For this case, what we should do is write an equation of the potential type:
 y = A * (b) ^ x
 Where,
 A: initial height
 b: decrease rate of initial height
 x: number of bounces.
 We have then:
 y = 3.5 * (0.75) ^ x
 For the ninth bounce:
 y = 3.5 * (0.75) ^ x
 y = 0.26
 Answer:
 The height of the 9th bounce of the ball is:
 y = 0.26 feet.