The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995. Year Retail Sales 0 85.851 3 108.426 6 141.781 9 169.256 12 202.297 15 222.266 Let yy be...

The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995.

Let yy be the retails sales in billions of dollars in xx years since 1995. A linear model for the data is y=9.44x+84.182y=9.44x+84.182.




A) Use the above scatter plot to decide whether the line of best fit, fits the data well.

• a) The function is a good model for the data.


• or


• b) The function is not a good model for the data

1. 
   
   B) To the nearest billion, estimate the retails sales in the U. S. in 2011.  __?__  billions of dollars.
   
   
   
   
   C) Use the equation to find the year in which retails sales will be $234 billion. __?__