Identify the equation without completing the square.y2 - 3x2 - 3x + 2y + 1 = 0
A. parabola
B. ellipse
C. hyperbola
D. circle
Answer: C
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Give an appropriate answer.Let
f(x) = 16. Find
log2 f(x).
A. 4 B. -6 C. 2 D. 16
Solve the minimization problem by using the simplex method to solve the dual problem.Minimize 16x1 + 20x2 + 36x3subject to x1 + 3x3 ? 3 2x2 + 6x3 ? 4 x1 + x2 ? 2and x1 ? 0, x2 ? 0, x3 ? 0
A. Minimum = 
when x1 = 2, x2 = 
, and x3 = 
B. Minimum = 
when x1 = 2, x2 = 
, and x3 = 
C. Minimum = 52 when x1 = 
, x2 = 
, and x3 = 
D. Minimum = 60 when x1 = 1, x2 = 1, and x3 = 
Solve the problem.A circular swimming pool, 20 feet in diameter, is enclosed by a circular deck that is 4 feet wide. What is the area of the deck? Use ? = 3.1416.
A. 301.6 ft2 B. 584.3 ft2 C. 314.2 ft2 D. 703.7 ft2
Evaluate the radical expressions or indicate that the root is not a real number.
A. 10 B. -10 C. 100 D. Not a real number