Find the center and foci of the ellipse.
?
 
?

A. center:           foci: 
B. center:           foci: 
C. center:           foci: 
D. center:           foci: 
E. center:           foci: 

Answer: C

Mathematics

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List the factors of the number.42

A. 1, 2, 3, 6, 7, 14, 28, 42 B. 1, 7, 6, 42 C. 7, 6, 14, 42 D. 1, 2, 3, 6, 7, 14, 21, 42  

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Find the domain of the rational expression.

A. {x|x is a real number and x ? -1 and x ? 7} B. {x|x is a real number and x ? -1} C. {x|x is a real number and x ? 7} D. {x|x is a real number}

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Find the slope and y-intercept of the line.-x + 2y = 8

A. slope = 2; y-intercept = -8
B. slope = -1; y-intercept = 8
C. slope = - ; y-intercept = 4
D. slope = ; y-intercept = 4

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Mathematics

Solve the problem.The manager of a CD store has found that if the price of a CD is  then x CDs will be sold. Find an expression for the total revenue from the sale of x CDs   Use your expression to determine the maximum revenue.

A. $26,912 B. $3364 C. $6728 D. $13,456

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Mathematics