Factor completely.3x2 - 9xy - 12y2 = 3( 
)( 
)
A. x - 3y, x + 4y
B. x - y, x + 4y
C. x + 3y, x - 4y
D. x + y, x - 4y
Answer: D
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Solve the problem.Find an ordered pair that satisfies the equation x + y = 1 by letting y = 0.
A. (1, 0) B. (6, 4) C. (0, 1) D. (0, 0)
Solve.The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 5 amperes when the resistance is 342 ohms. What is the current when the resistance is 864 ohms?
A. 0.08 amps B. 12.6 amps C. 0.51 amps D. 2 amps
Perform the indicated operation.(30x + 12) - (-2x2 - 15x + 12)
A. 2x2 + 45x - 24 B. -2x2 + 15x + 24 C. 2x2 + 45x D. 2x2 - 45x
Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.P(x) = 4x8 + 7x6 + 4x4 + 6x2 + 8
A. 0 positive; 4 negative B. 0 positive; 0 negative C. 4 positive; 0 negative D. 4 positive; 4 negative