Answer:

Step-by-step explanation:
i)
The slope is the number in front of the x. In this equation it is 1.
The expression of the height is

the index "n" is the numbers of times that the ball is down, to n=1 the height is 8 inches, to n=2 the height is 4 inches.
An when n=5, the height is

the anwers is 0.5 inches
The answer is 59049 hope this helps