1. 

(Medicare). The annual expenditures for Medicare (in billions of dollars) by the US Government for selected years since 1980 are shown in Table 4. Let x represent the years since 1980. (Use 4 decimal places in all answers.) Table 4: Medicare Expenditures Year Billion $ 1980 1985 1990 1995 37 72 111 181 2000 2005 197 330 A. Find the exponential regression model for the data. M(x) - B. What is the value for this model? 2- C. Extimate (to the nearest billion) the expenditures in 20087 The Medicare expenditures in 2008 were about $ bilion.