Solve the problem.In a chemistry class, 9 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 3.5 L
B. 4.5 L
C. 5.5 L
D. 9 L
Answer: B
Mathematics
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Use Lagrange multipliers to find the maximum value of the function subject to the given constraint.
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Solve the problem.In a certain town, 5% of people commute to work by bicycle. If a person is selected randomly from the town, what are the odds in favor of selecting someone who commutes by bicycle?
A. 1 to 20 B. 20 to 19 C. 19 to 1 D. 1 to 19
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Multiply.-9x(-12x + 3)
A. 108x2 - 27x B. 108x2 + 3x C. 81x2 D. -12x2 - 27x
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Find the asymptotes of the function.y = 
A. No vertical asymptote; horizontal asymptote at y = 6 B. Vertical asymptote at x = 6; no horizontal asymptote C. No asymptotes; hole at x = 6 D. Vertical asymptote at x = -6; no horizontal asymptote
Mathematics