Provide an appropriate response.How can you rewrite a subtraction problem to make it easier to solve? Give an example.
What will be an ideal response?
Change subtraction sign to addition and change the sign of the subtrahend to its opposite. 
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Provide an appropriate response.Is f continuous at x = 0? 
A. No B. Yes
Perform the indicated operations and simplify the result. Leave the answer in factored form.
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A. - 
B. - 
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D. 
Determine whether the following is a probability model.
A. Yes B. No
?Suppose that the table shows the numbers y of motor vehicle registrations (in millions) in the United States for the years 2000 through 2004. Use the method of least squares to find the least squares regression line for the data. Let t represent the year, with corresponding to 2000. Round the coefficient and constant of the equation to two decimal places. Year 2000 2001200220032004 Number(y)220.5231.4231.6236.4237.2?
A. ?
B. ?
C. ?
D. ?
E. ?