Life expectancies in the United States are always rising because of advances in health care, increased education, and other factors. The rate of change (measured at the end of each year) of life expectancies for women in the United States between 1970 and 2010 can be modeled by
years per year where t is the number of years since 1970. Note: f is measured in years (life expectancy) per year (chronological).† (a) By how much is the life expectancy for women projected to increase between 2000 and 2010? (Round your answer to three decimal places.) yr (b) What other information is needed to determine the projected life expectancy for women in 2010? To determine the projected life expectancy in 2010, it is necessary to know the projected life expectancy in 1970