Graph the function. Show at least one period.y = 4 sin(-4x - ?)
A. 
B. 
C. 
D. 
Answer: D
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Solve. 27 - n2 = 6n
A. 9, -3 B. 3, -9 C. -9, -3 D. 3, 9
Solve the system graphically.
A. (-6, -7) B. (-6, -2) C. (6, -2) D. (-8, 4)
Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438 B. 0.487 C. 0.91 D. 0.856
Solve the problem.For a hyperbolic mirror the two foci are 38 cm apart. The distance of the vertex from one focus is 7 cm and from the other focus is 31 cm. Position a coordinate system with the origin at the center of the hyperbola and with the foci on the y-axis. Find the equation of the hyperbola.
A. 
- 
= 5
B. 
- 
= 5
C. 
- 
= 1
D. 
- 
= 1