Use elimination to solve the system of equations.5x - 4y = -315x - 12y = 9
A. (15, -12)
B. (-15, 12)
C. Inconsistent; no solutions
D. Dependent; 
5x - 4y = -3}
Answer: C
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Solve the problem.A 32.00-lb weight stretches a certain spring 6.40 ft when the weight and spring are placed in a fluid that resists the motion with a force equal to four times the velocity. If the weight is brought to rest and then given a velocity of 17 ft/s, find the equation of motion.
A. y = 17e-2t sin t + 16e-2t cos t B. y = 17e-t sin 2t C. y = 17e-2t cos t D. y = 17e-2t sin t
Solve the quadratic inequality symbolically. Write your answer in interval notation.x2 - 9x + 18 ? 0
A. (-?, 3] B. (-?, 3] ? [6, ?) C. [6, ?) D. [3, 6]
Find the opposite of the number.-16
A. 16 B. -16 C. -1 D. 0
Find the indicated term of the sequence.The twentieth term of the arithmetic sequence 11, 7, 3, ...
A. -65 B. 87 C. 91 D. -69