Multiply the expressions.(3y + x2)(3y - x2)

A. 9y2 - x4
B. 9y4 - x4
C. 6y2 - x4
D. 9y2 - x2

Answer: A

Mathematics

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Simplify.3

A.
B.
C.
D.

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Find the area. Use ? ? 3.14 when needed.

A. 90 m2 B. 45 m2 C. 504 m2 D. 1008 m2

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Arrange in descending powers of x.-2x3y + 4xy3 + 5x2y2 - 6x4

A. 4xy3 + 5x2y2 - 2x3y - 6x4 B. -6x4 + 4xy3 + 5x2y2 - 2x3y C. -6x4 - 2x3y + 5x2y2 + 4xy3 D. -2x3y + 5x2y2 + 4xy3 - 6x4

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Make a time plot for the indicated data.In 1978, a certain baseball player had 15 stolen bases; in 1979, 17; in 1980, 15;   in 1983, 15; in 1984, 15; in 1985, 18; in 1986, 22; and in 1987, 24. 

A.

B.

?

C.


D.

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