Explain the graph on the infant mortality:

Consider the data on deaths per 1000 live births (infant mortality) in the US. Infant Mortality Rates in the U (Deaths per 1000 live births) Year Rate 1940 54.8 1950 35.3 1960 27 1970 22 1980 14 1990 9.4 2000 7.1 2010 6.2 2020 5.6 Show on a graph using a ratio scale of deaths per 1000 live births over time. Provide a table showing the average annual growth rate of infant mortality for each decade. Has the magnitude of the growth rate slowed since 1970 or not? Relate this to the graph in part 1 Imagine you see this graph in The Economist and want to estimate the average annual growth rate. You don't have the data but can eyeball that the mortality rate was 22 in 1970 and 5.6 in 2020. Using the Rule of 70, compute an estimate for the average annual growth rate. How does this compare to the actual rate? Suggest two economic forces that could explain why infant mortality has declined by a factor of 10 since 1940? Conceptually, relate the pattern of growth rates you documented above to those two forces