Write the sum using summation notation.18 + 30 + 42 + 54 + 66

A.
B.
C.
D.

Answer: B

Mathematics

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Graph the function. Specify the intervals over which the function is increasing and the intervals where it is decreasing.y = (-x)5/2

A. Decreasing -? < x < ?

B. Decreasing -? < x ? 0

C. Decreasing -? < x ? 0
Increasing 0 ? x < ?

D. Increasing 0 ? x < ?

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Mathematics

Find the length of the curve r(t) = 2ti+4 costj+4 sintk, 0?t?2?.

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Mathematics

Simplify. ÷  ÷ 

A. 3
B.
C. 1
D. 2

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Mathematics

Perform the requested composition or operation.Find (fg)(3) when f(x) = x - 2 and g(x) = -3x2 + 16x - 6.

A. -165 B. 75 C. 51 D. 15

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Mathematics