Please help me with this assignment

November and December retail sales, excluding autos, for the years 2001-2009 can be modeled by the function S(x) = - 1.734x + 38.124x+ 384.860 billion dollars, where x is the number of years after 2000. a. Graph the function for values of x representing 2001-2009. b. During what years does the model estimate the sales to be $530 billion? c. The recession in 2008 caused retail sales to drop. Does the model agree with the facts, that is, does it indicate that a maximum occurred in 2008? to, 11] by 1400, 7001 to, 11] by 1400, 7001 ( - 21 01 by :400, 7003 [ - 11, 0] by [400, 700] b. The model estimates sales of $530 billion in 3.3090. - 25 2951. (Round up to the nearest year. Use a comma to separate answers as needed!)