Multiply.(x + y + 4)(x + y - 4)
A. x2 + y2 + 2(xy - 4)
B. x2 + y2 + 2xy + 16
C. x2 + y2 + 2xy - 16
D. x2 + y2 - 16
Answer: C
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Factor the expression by removing the common factor with the smallest exponent.
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A. 
B. ?
C. ?
D. ?
E. ?
The following table shows the number T, in millions, of international tourists visiting the United States t years after 2005. t 0 1 2 3 T 49.88 51.65 55.40 57.04A: 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 line.D: What number of tourists does the regression line predict for 2011?
What will be an ideal response?
Find the rational fraction in lowest terms represented by the periodic decimal.0.44444 . . .
A. 
B. 
C. 
D. 
Solve the equation. Express irrational solutions in exact form and as a decimal rounded to three places.3x2 ? 27 = 92x
A. 
B. {1, 3}
C. {-1, 4}
D. {1}