Life Expectancy of a Female Suppose that in a certain country the life expectancy at birth of a female is changing at the rate of 4.2546 g'(t) = - (1 + 1.05t) 0.9 years/year. Here, t is measured in years, with t = 0 corresponding to the beginning of 1900. Find an expression g(t) giving the life expectancy at birth (in years) of a female in that country if the life expectancy at the beginning of 1900 is 40.52 years. g(t) = What is the life expectancy (in years) at birth of a female born in 2000 in that country? (Round your answer to two decimal places.) yr