The following scatter plot shows the billions of dollars spent by travelers in the United States since 1993. Write an equation for the line of best fit and then predict how much money travelers will spend in 2008. a. ; travelers will spend about $410 billion in the year 2008. b. ; travelers will spend about $350 billion in the year 2008. c. ; travelers will spend about $620 billion in the year 2008. d. ; travelers will spend about $680 billion in the year 2008. Please select the best answer from the choices provided