Find the real solutions, if any, of the equation. Use the quadratic formula.x2 - 4x - 7 = 0
A. {-2 + 
, -2 - 
}
B. {2 + 
, 2 - 
}
C. {2 + 
, 2 - 
}
D. {4 + 
, 4 - 
}
Answer: C
Mathematics
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Determine convergence or divergence of the alternating series.
A. Converges B. Diverges
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Encode or decode the given message, as requested, numbering the letters of the alphabet 1 through 26 in their usual order.Use the coding matrix A = 
to encode the message COME_HERE.
A. 
B. 
C. 
D. 
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For problems 4-9, use long division to find the quotient.
A. 
B. 
C. 
D. 
E. none of these
Mathematics
Solve the linear inequality. Express the solution using set-builder notation and interval notation. Graph the solution set.x - 7 ? -5
A. {x|x < 2}; (-?, 2)
B. {x|x < -12}; (-?, -12)
C. {x|x ? 2}; (-?, 2]
D. {x|x ? 2}; [2, ?)
Mathematics