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trillsmith
trillsmith
27.07.2021 • 
Business

The population of Americans age 55 years and over as a percent of the total population is approximated by the function f(t) = 10.72(0.9t + 10)0.3 0 ≤ t ≤ 20 where t is measured in years, with t = 0 corresponding to the year 2000.† 1. At what rate was the percent of Americans age 55 years and over changing at the beginning of 2006? (Round your answer to four decimal places.)
2. At what rate was the percent of Americans age 55 years and over changing at the beginning of 2006? (Round your answer to four decimal places.)
% per year
3. At what rate will the percent of Americans age 55 years and over be changing at the beginning of 2012? (Round your answer to four decimal places.)
% per year
4. What will be the percent of the population of Americans age 55 years and over at the beginning of 2012? (Round your answer to two decimal places.)%

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