Question

karen dropped a ball from different heights. this table shows the height from which she dropped the ball and the height of the ball’s first bounce.
drop height (inches) | 20 | 30 | 40 | 50 | 60
bounce height (inches) | 15 | 24 | 33 | 42 | 51
what was the average rate of change in the bounce height as drop height changed from 20 inches to 60 inches?
a 0.90
b 0.85
c 0.60
d 0.25

Explanation:

Step1: Identify start and end values

Drop height: 20→60 inches (Δdrop=60-20=40). Bounce height:15→51 inches (Δbounce=51-15=36).

Step2: Calculate average rate of change

Average rate = Δbounce/Δdrop = 36/40 = 0.90.

Answer:

A. 0.90