Answer: a. 0.0825 years of age per year
Step-by-step explanation:
From the given table , the median age per year in 1950 = 22.8
The median age per year in 1990 = 26.1
We know that the average rate of change of a function f(x) from x=a to x=b is given by :-
\(\dfrac{f(b)-f(a)}{b-a}\)
Now, the the average rate of change in median age per year from 1950 to 1990 is given by :_
\(\dfrac{26.1-22.8}{1990-1950}=0.0825\)
Hence, the average rate of change in median age per year from 1950 to 1990 is 0.0825 years of age per year.
