Step-by-step explanation
Given the functions
We can find the function with the least rate of change and the greatest rate of change by finding the slope of the function.
For the first function, we will compare the equation with the general equation of a line which is

Where m is the slope.
By comparison, the slope of the first equation would be 5.
For the second function, which is denoted by a table of values, we will find the slope by picking two points from the table and inserting it into the slope formula below.

Therefore, we will have;

Hence, the slope of the second function is 3.
Therefore, the answer is