Final answer:
The rate of change between the points (2, 15.50) and (4, 31) is 7.75.
Step-by-step explanation:
To find the rate of change, or slope, between two points, we use the formula:
slope = (change in y) / (change in x)
Given the points (2, 15.50) and (4, 31), we can calculate the slope as follows:
slope = (31 - 15.50) / (4 - 2)
slope = 15.50 / 2
slope = 7.75
Therefore, the rate of change of the given points is 7.75.