Find the center, foci, and asymptotes of the hyperbola.x2 - y2 = 128
A. C: (0, 0); F: (16, 0), (-16, 0); A: y = x, y = - x
B. C: (0, 0); F: (8, 0), (-8, 0); A: y = x, y = - x
C. C: (2, 2); F: (16, 0), (-16, 0); A: y = 2x, y = - 2x
D. C: (0, 0); F: (16, 0), (-16, 0); A: y =2x, y = - 2x
Answer: A
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Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them. 8x - y + 7z = 54-3x - 2z = -18 4y + z = 22
A. x = -2, y = 4, z = 4 B. x = 2, y = 4, z = 6 C. x = 2, y = 6, z = 4 D. Inconsistent
Calculate the instantaneous velocity for the given value of t of an object moving with rectilinear motion according to the given function relating s (in ft) and t (in s)s = t2 + 5t; 
A. -6 ft/s B. 11 ft/s C. 6 ft/s D. 9 ft/s
Divide, if possible. If a quotient is undefined, state so.
A. -4 B. 27 C. 4 D. -27
Solve the problem.The viewing angle for a camera is given (in degrees) by 
where x is the focal length of the lens. The focal length on most adjustable cameras is marked in millimeters on the lense mount. Find the viewing angle, in degrees, if the focal length is 180 millimeters.
A. 135.0° B. 17.1° C. 5.7° D. 252.9°