Find the domain of the given function.f(x) = 

A. (-?, 6]
B. (-?, ?)
C. (-?, -6) ? (-6, ?)
D. (6, ?)

Answer: D

Mathematics

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Evaluate the integral using the given substitution. dx , u = x3/2 - 10

A. sin3 (x3/2 - 10) + C
B.   sin (x3/2 - 10) + C
C. (x3/2 - 10) +  sin 2(x3/2 - 10) + C
D. x3/2 - 10 +  sin 2(x3/2 - 10)+ C

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Mathematics

Solve the equation involving fractions. = 1 + 

A. -20, 14 B. -12, 14 C. No solution D. 12, -14

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Mathematics

Factor completely.x2 + 7x - 30

A. (x - 10)(x + 1) B. prime C. (x + 10)(x - 3) D. (x - 10)(x + 3)

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Mathematics

Solve the problem.A construction crane lifts a bucket of sand originally weighing  at a constant rate. Sand is lost from the bucket at a constant rate of. How much work is done in lifting the sand ? (Neglect the weight of the bucket.)

A. 9000 ft ? lb B. 7200 ft ? lb C. 8100 ft ? lb D. 9900 ft ? lb

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Mathematics