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
Answer: A
Mathematics
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Solve the equation.(y - 6) - (y + 2) = 7y
A. - 
B. - 
C. - 2
D. - 
Mathematics
Eliminate the parameter t. Find a rectangular equation for the plane curve defined by the parametric equations.x = 2t - 1, y = t2 + 7; -4 ? t ? 4
A. y = 
x2 + 1; -6 ? x ? 4
B. y = x2 + 1; -2 ? x ? 2
C. y = 
x2 + 
x + 
; -9 ? x ? 7
D. y = - 
x + 30; -6 ? x ? 4
Mathematics
For the pair of functions, find the indicated domain.f(x) = 2x - 5, g(x) = 
Find the domain of g ? f.
A. (-3, 3) B. [-?,1) C. [1, ?) D. [3, ?)
Mathematics
Solve and graph the solution set.13y + 12 ? 12y + 6
A. {y|y > 13} or (13, ?)
B. {y|y ? -6} or [-6, ?)
C. {y|y ? -6} or (-?, -6]
D. {y|y < 13} or (-?, 13)
Mathematics