The following table shows the number A , in millions, of traffic accidents t years after 2004.
t 0 1 3 4 E 10.92 10.75 10.65 10.24?
?
A: Find the equation of the regression line.B: Plot the data along with the regression line.C: Explain in practical terms the meaning of the slope of the regression equation.D: What number of accidents does the regression line predict for 2009?
What will be an ideal response?
?
B:
?
C: During the period from 2000 to 2004, the number of traffic accidents decreased by about 0.15 million each year.
?
D: 10.18 million
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Find all specified roots.Fifth roots of 1.
A. 1, cis 
, cis 
, cis 
, cis 
B. 1, cis 
, cis 
, cis 
, cis 
C. 1, cis 
, cis 
, cis 
,-1
D. -1, cis 
, cis 
, cis 
, cis 
Graph the inequality on a number line. Then write the solution in interval notation.-1 ? x < 3
A. (-1, 3)
B. (-1, 3]
C. [-1, 3]
D. [-1, 3)
Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.(2x2/3)(7x3/4)
A. 14x17/12 B. 14x17/7 C. 14x2/3 D. 14x5/12
Using the factoring method, solve for the roots of the quadratic equation.48x2 + 52x = 0
A. x = 
, x = 0
B. x = 
, x = - 
C. x = - 
, x = 0
D. x = 0