Mathematics, 20.09.2019 03:20 cynone8254
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?
Answers: 3
in years after 1900, then  we have
as we isolate for 
, 
, finally, we obtain that the birth year which the average life expectancy will be 73 years is 1990
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According to one mathematical model, the average life expenctancy for american men born in 1900 was...
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