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. 1910 1920 1930 1940 1950 1960 1970 1980 1990 Year Median Age 2000 26.8 25.1 24.6 24.3 24.3 22.8 22.8 23.2 24.7 26.1 a. Determine the average rate of change in median age per year from 1930 to 1960. -0.5 years of age per year b. 20 years of age per year -0.05 years of age per year d. +0.05 years of age per year C.

1980

Step-by-step explanation:

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0