Has the marrying age of a man changed over the years? the united states bureau of the census takes a formal count of everyone in the u. s. every 10 years and has provided the following data that gives the median age of an american man at the time of his first marriage.
year
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
median age
25.1
24.6
24.3
24.3
22.8
22.8
23.2
24.7
26.1
26.8
determine the average rate of change in median age per year from 1950 to 1990.

The average rate of change in median age per year from 1950 to 1990 is:

                                 0.085

We know that the average rate of change is defined as the ratio of difference of one quantity with respect to the difference of the other quantity.

We are given table of values as:

Year               Median Age

1910                  25.1  

1920                  24.6

1930                  24.3

1940                  24.3

1950                  22.8

1960                  22.8

1970                   23.2

1980                   24.7

1990                   26.1

2000                  26.8

Hence, the average rate of change from 1950 to 1990 is given by:

(-5,-28)

i graphed to on desmos.

2x^2+5x+17

your welcome. : )