Find real numbers a and b such that the equation is true.
?
?
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A. ?a = 0, b = -
B. ??a = 0, b = -
C. ??a = 0, b = -
D. ??a = 0, b = -9
E. ??a = 0, b = -10
Answer: B
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Solve the inequality.-2x - 1 ? -3x - 8
A. (-?, -7]
B. [-7, ?)
C. (-2, ?)
D. (-?, -2)
Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
We have encoded a message by assigning the numbers 1 - 26 to the letters a - z of the alphabet, respectively, and assigning 27 to a blank space. We have further encoded it by using an encoding matrix. Decode this message by finding the inverse of the encoding matrix and multiplying it times the coded message.The encoding matrix is A = 
and the encoded message is 45, -55, 9, -3, -33, 50, -39, 61, -13, 24.
Fill in the blank(s) with the appropriate word(s).
Find the standard deviation for the given data.The manager of a small dry cleaner employs six people. As part of their personnel file, she asked each one to record to the nearest one-tenth of a mile the distance they travel one way from home to work. The six distances are listed below: 14.3 12.3 42.0 40.2 17.2 14.7Round results to two decimal places.
A. 41.10 B. 13.77 C. 3299.42 D. 4247.75