Evaluate the expression. 

A.
B. 5
C. 15
D. 30

Answer: C

Mathematics

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A. an = 
B. an = 
C. an = 
D. an = 

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The magnitude of a star is a measure of its brightness, and it is related to the relative intensity of light reaching Earth from the star. The relationship is Magnitude Relative intensity). If relative intensity is divided by 100, how is magnitude affected? ?

A. Magnitude is  decreased by 2. B. Magnitude is increased by 5. C. Magnitude is  increased by 2. D. Magnitude is  decreased by 5.

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Find the average value of the function f over the given region.f(x, y) = sin 3(x + y); R = 

A.
B.
C. 4?2
D. ?2

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Find all values of a for which f(a) is the indicated value.f(x) = 6x - ; f(a) = 1

A. - , 
B. - , 
C. - , 3
D. - , 

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