Question: Poverty threshold the average poverty threshold for 1990-2008 for a single individual can be modeled by
y = -3130.3 + 4056.8 ln x
where x is the number of years past 1980 and y is the annual income in dollars (Source: U.S. Bureau of the Census).
(a) What does the model predict as the poverty threshold in 2015?
(b) Graph this function for x = 5 to x = 40 with a graphing utility.