Adkins Joseph

10/05/2023 · Elementary School

The 2010 census in a particular area gives us an age distribution that is approximately given (in millions) by the function \( f(x)=40.9+2.1 x-0.75 x^{2} \) where \( x \) varies from 0 to 9 decades. The population of a given age group can be found by integrating this function over the interval for that age group. A. The total number of people in this area aged 0 to 90 was about 271 million in 2010 . 20 integral over the interval [ 0,9\( ] \). (a) B. The number of people in this area increased by about 271 million people aged 0 to 90 in (Round to the nearest integer as needed.) Chat does this integral represent? C. The total number of people in this area under 9 years old was about 271 in 2010 . D. About 271 million people aged 0 to 90 have ever lived in this area from year 0 through 2010 .