(6) The life expectancy (at birth) of all Americans in 2020 (78.6 years) is _______% greater than the life expectancy of all Americans in 1900 (47.3 years). (Find the relative change in life expectancy between these years as a percentage. Show your work below.)
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The difference in life expectancy is 78.6 years - 47.3 years = 31.3 years. Show more…
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Use the table that shows the life expectancy for people born in various years. $\begin{array}{|c|c|c|c|c|c|}\hline 1950 & {1960} & {1970} & {1980} & {1990} & {2000} \\ \hline 68.2 & {69.7} & {70.8} & {73.7} & {75.4} & {7.0} \\ \hline\end{array}$ Predict the life expectancy of a person born in 2010.
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Robin C.
According to one mathematical model, the average life expenctancy for American men born in 1900 was 55 years. Life expectancy has increased by about 0.2 year for each birth year after 1900 . If this trend continues, for which birth year will the average life expentancy be 73 years?
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