Solve the equation for y.5x + 8y - 4z = 11
A. y = 
B. y = 4z - 5x + 3
C. y = 
D. y = 
Answer: A
Mathematics
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The demand function for a certain brand of compact disc is 
where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. Compute the elasticity of demand and determine whether the demand is inelastic, unitary, or elastic when x = 10.
?
A. elastic B. inelastic C. unitary
Mathematics
Find the center of the hyperbola.y2 - x2 - 12y + 6x - 9 = 0
A. (3, 6) B. (-3, -6) C. (-3, 6) D. (3, 0)
Mathematics
Solve the inequality.
(x + 1) > 
(x + 1)
A. x < -1 B. x > 1 C. x > -1 D. x < 1
Mathematics
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
Mathematics