The average life expectancy y of a person born x years after 1960 can be approximated by

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The average life expectancy y of a person born x years after 1960 can be approximated by the linear equation y = 1/6x + 70.

(a) What interpretation can be given to the y-intercept of the graph?

(b) In what year did people born that year have an average life expectancy of 75 years?

(c) What is the average life expectancy of people born in 1999?

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Finite Mathematics and Its Applications

ISBN: 978-0134768632

12th edition

Authors: Larry J. Goldstein, David I. Schneider, Martha J. Siegel, Steven Hair

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