Solve the inequality.x2 + 3x - 28 > 0

A. (-7, 4)
B. (4, ?)
C. (-?, -7) or (4, ?)
D. (-?, -7)


Answer: C

Mathematics

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Integrate the function f over the given region.f(x, y) =  over the square 4 ? x ? 6, 4 ? y ? 6

A. ln 
B. 2
C. 2
D.

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Solve the problem.It has been determined that the number of fish f(t) that can be caught in t minutes in a certain pond using a certain bait is f(t) = 0.21t + 1, for t > 10. Find the approximate number of fish that can be caught if you fish for 14 minutes.

A. About 9 fish B. About 3 fish C. About 18 fish D. About 16 fish

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Find all the complex roots. Leave your answers in polar form with the argument in degrees.The complex fifth roots of -2i

A. (cos 45° + i sin 45°), (cos 117° + i sin 117°), (cos 189° + i sin 189°), (cos 261° + i sin 261°), 
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Mathematics

Find all rational zeros of f. Then (if necessary) use the depressed equation to find all roots of the equation f(x) = 0.f(x) = x5 - 9x4 + 18x3 + 30x2 - 115x + 75

A. {-5, -3, 1, -}
B. {-5, -3, -1, -}
C. {1, 3, 5, -}
D. {0, 1, 3, 5, }

Mathematics