Find the value of df-1/dx at x = f(a).f(x) = x2 - 2x + 4; a = 5

A. 8
B.
C.
D.


Answer: C

Mathematics

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Determine the quartiles as specified.The normal annual precipitation (in inches) is given below for 21 different U.S. cities. Find the first quartile. 

A. 14.425 in. B. 14.75 in. C. 14.1 in. D. 15.4 in.

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Evaluate.(-10)0- 100

A. -1 B. 1 C. 0 D. 10

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Find all solutions of the equation. Express the solution in radians.sin x = -1

A.  + n?
B.  + 2n?
C.  + 2n?
D. ? + 2n?

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Find all specified roots.Fifth roots of 1.

A. 1, cis , cis , cis , cis 
B. 1, cis , cis , cis , cis 
C. 1, cis , cis , cis ,-1
D. -1, cis , cis , cis , cis 

Mathematics