Look at the table given below that gives the population of the United States, the cost of the U.S. census, and the percentage increase of both variables for years beginning with 1950. Do you see any growth patterns in any of these variables? What growth model (if any) would you use to describe each variable?

United States Population and Cost of the Census

1950	151,325,798	14.9%	$91,462,000	35.4%
1960	179,323,175	18.5%	$127,934,000	39.9%
1970	203,302,031	13.4%	$247,653,000	93.6%
1980	226,542,199	11.4%	$1,078,488,000	335.5%
1990	248,718,301	9.8%	$2,492,830,000	131.1%
2000	281,421,906	13.1%	$4,500,000,000	80.5%
2010	308,400,408	9.6%	$13,000,000,000	188.9%

Source: U.S. Census Bureau.

The  three different mathematical models the question is referring too are; linear growth, exponential growth, and logistical growth.