Data about recent federal defense spending are given in the accompanying Statistical Abstract of the United States table. Here t in billions of dollars. t-Years since 1990 D= Spending (billions of dollars) 0 328.4 5 310.0 10 341.5 565.5 843.8 15 20 (a) Calculate the average yearly rate of change in defense spending from 1990 to 1995. -3.68 billion dollars per year (b) Use your answer from part (a) to estimate D(3). 321.04 x billion dollars Explain what this value means. O D(3) is the average rate of change in federal defense spending from 1990 to 1993, in billions of dollars. D(3) is the federal defense spending for 1993, in billions of dollars. O D(3) is the federal defense spending for 1903, in billions of dollars. O D(3) is the percent increase in federal defense spending from 1900 to 1903, in billions of dollars. O D(3) is the percent increase in federal defense spending from 1990 to 1993, in billions of dollars. (c) Calculate the average yearly rate of change in defense spending from 2005 to 2010. 843.8 X billion dollars per year (d) Use your answer from part (c) to estimate the value of D(24). billion dollars