5-8: use the graphs in Figure 7.11 to answer the following questions. U.S. Death Rate by Age (0 to 80) Death rate (per 1000 U.S. Life Expectancy by Age (0 to 100) 50 45 40 35 30 90 80 70 60 25 Years 50 40 30 15 10 20 5 10 0 0 10 20 30 40 50 60 70 80 0 10 20 Age 30 40 50 60 Age 70 70 (a) FIGURE 7.11 (b) (a) The overall U.S. death rate (deaths per 1000 people) for different ages. (b) Life expectancy for different ages. Source: Centers for Disease Control and Prevention. 80 90 100 7. To what age could the average 40-year-old expect to live? 8. At what average age will today's 80-year-olds die? Assume no changes to life expectancies over the next 20 years.