Find the vertices and foci of the given ellipse.9x2 + 4y2 = 36
A. Vertices: (0, 9) and (4, 0);
Foci: (0, 3) and (2, 0)
B. Vertices: (0, 9) and (0, -9);
Foci: (0, 3) and (0, -3)
C. Vertices: (0, 3) and (0, -3);
Foci: (0, 
) and (0, -
)
D. Vertices: (3, 0), (-3, 0);
Foci: (
, 0) and (-
, 0)
Answer: C
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Solve the problem.The number of mobile phones sold in a given year is approximated by 
where x represents the number of years since mobile phones became readily available. The corresponding polynomial for phones is 
Find the polynomial that represents how many more mobile phones than phones were sold in a given year.
A. -3x4 - x3 - 5x + 9 B. 3x4 - x3 + 11x2 - 6x + 8 C. -3x4 + x3 + 10x2 + 6x - 8 D. -3x4 + x3 + 3x2 - 12x + 10
Write the answers.Write in standard notation. thirty-six thousand five hundred forty-eight
A. 306,548 B. 360,548 C. 36,548 D. 365,048
Use the graph to answer the question. 
What were the total sales for the first 6 months of 2006?
A. $240,000 B. $290,000 C. $366,000 D. $46,000
Write the function using function notation. Let x be the independent variable and y be the dependent variable. Use the letter f to name the function.5x - 3y = 24
A. y = 
f(x) - 8
B. f(x) = 
x - 8
C. y = - 
f(x) - 8
D. f(x) = - 
x + 8