Solve the problem.The table lists the amount of emissions of a certain pollutant in millions of tons.
If the amount of emissions is modeled by a function of the form 
where x is the year, estimate the amount of emissions in the year 2020.
A. 43.2 million tons
B. 38.0 million tons
C. 33.4 million tons
D. 41.1 million tons
Answer: B
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Determine the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (0, 9) and (2, 0)
vertices at (0, 81), (4, 0)
B. center at (0, 0)
foci at (0, -9) and (0, 9)
vertices at (0, -81), (0, 81)
C. center at (0, 0)
foci at (- 
, 0) and (
, 0)
vertices at (-9, 0), (9, 0)
D. center at (0, 0)
foci at (0, - 
) and (0, 
)
vertices at (0, -9), (0, 9)
Multiply the polynomials.(5x2 - 3x + 3)(x2 - 3x - 2)
A. 5x4 - 15x3 + 2x2 - 3x - 6 B. 5x4 - 15x3 - 1x2 - 3x - 6 C. 5x4 - 18x3 - 1x2 - 3x - 6 D. 5x4 - 18x3 + 2x2 - 3x - 6
Perform the indicated operations and simplify.
- 
+ 
A. 
B. 
C. 
D. 
Multiply.(x + 11)(x - 11)
A. x2 - 121 B. x2 - 22x - 121 C. x2 - 22 D. x2 + 22x - 121