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Mathematics

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Find .y = sec-1(5x3)

A.
B.
C.
D.

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Mathematics

Solve the problem.The profit from the expenditure of x thousand dollars on advertising is given by  Find the marginal profit when the expenditure is 

A. -69 thousand dollars /unit B. 210 thousand dollars/unit C. 1190 thousand dollars/unit D. 126 thousand dollars/unit

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Mathematics

Multiply.(3x - 9)(3x - 9)

A. 3x2 - 54x - 55 B. 9x2 + 81x - 54 C. 9x2 - 54x + 81 D. 3x2 - 55x + 81

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Mathematics

Solve the equation.3(9 - 3x) = 27

A. {2} B. {3} C. {-2} D. {9}

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Mathematics