Find the solution to the system by addition (elimination) method. 2x + 6y = -36 11x + 2y = 81
A. (11, -11)
B. (-9, 9)
C. (9, -9)
D. (-2, 9)
Answer: C
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Perform the indicated operation.(4n7 - 6n + 3n5) + (9n5 + 8n7 + 7n)
A. 25n13 B. 12n + 12n7 + 1n5 C. 12n7 + 12n5 + 1n D. 2n7 + 13n5 + 10n
Solve the problem.At a plant that packages bottled spring water, the water is passed through a sequence of ion-exchange filters to reduce the sodium content prior to bottling. Each filter removes 73% of the sodium present in the water passing through it. Determine the number of filters that must be used to reduce the sodium concentration from 21 parts-per-million to 1.69 parts-per-million.
A. 10 filters B. 11 filters C. 8 filters D. 9 filters
Use synthetic division to divide f(x) by x - k for the given value of k. Then express f(x) in the form 
for the given value of k.f(x) = 2x5 - x4 + 3x2 - x + 5; k = 1
A. f(x) = (x - 1)(2x4 + x3 + x2 + 4x + 3) + 8 B. f(x) = (x - 1)(2x4 + x3 + 4x2 + 3x) + 8 C. f(x) = (x - 1)(2x4 - 3x3 - x) + 6 D. f(x) = (x - 1)(2x4 + x3 - x2 + 2x + 1) + 6
Provide an appropriate response.Evaluate: 
Fill in the blank(s) with the appropriate word(s).