The number, in millions, of international tourists who visited the United States is given in the following table.† Date 2010 2011 2012 2013 Millions of tourists 59.74 62.33 66.66 69.77 (a) Plot the data. (Let t be the number of years since 2010 and T the number of tourists, in millions.)

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The number, in millions, of international tourists who visited the United States is given in the following table.†

Date 2010 2011 2012 2013
Millions of
tourists
59.74 62.33 66.66 69.77
(a) Plot the data. (Let t be the number of years since 2010 and T the number of tourists, in millions.)
   
   

(b) Find the equation of the regression line. (Let t be the number of years since 2010 and T the number of tourists, in millions. Round the regression line parameters to two decimal places.)
T(t) = 
 
 
 


Add its graph to your data plot.
   
   

(c) Explain in practical terms the meaning of the slope. (Round your answers to two decimal places.)
The slope of the regression line is  , and this means that every year the number of tourists who visited the United States from overseas increases by about  million.

(d) Express, using functional notation, the number of tourists who visited the United States in 2014.
T 
 
  
 


Estimate that value. (The actual number was 74.73 million. Round your answer to two decimal places.)
 million
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