Solve the inequality. Graph the solution set and write it in interval notation.|2k + 2| ? 9
A. 
B. 
C. 
? 
D. 
Answer: C
Mathematics
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Find the indicated series by the given operation.Show that by differentiating term by term the expansion of 
the result is the expansion for 
A. 
(1 + 2x - 3x2 + 4x3 - . . .) = -2(1 + 3x - 6x2 + . . . )
B. 
(1 - 4x + 6x2 - 8x3 + . . .) = -2( 2 - 6x + 12x2 - . . .)
C. 
(1 - 2x + 3x2 - 4x3 + . . .) = -2(1 - 3x + 6x2 - . . .)
D. 
(2x + 3x2 - 4x3 + . . .) = -2(1 - 3x + 6x2 - . . .)
Mathematics
For the given functions f(x) and g(x), find (f ? g)(x) or 
(x) as indicated.f(x) = x2 - x - 9, g(x) = x - 1Find (f ? g)(x).
A. x3 - 2x2 - 10x - 9 B. x3 - 2x2 - 8x + 9 C. x3 - 2x2 - 9x + 9 D. x3 - 8x + 9
Mathematics
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Mathematics
Solve.m - 1 ? -5
A. m ? 4 B. m ? -4 C. m ? -6 D. m ? 6
Mathematics