Solve the problem.In a chemistry class, 4 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. 2.0 L
B. 4.0 L
C. 1.0 L
D. 3.0 L
Answer: A
Mathematics
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Solve the rational inequality. Express the solution using interval notation.
? 0
A. [-1, 5] ? [8, ?) B. [-1, 5) ? (8, ?) C. (-?, -1] ? (5, 8) D. (-?, -1] ? [5, 8]
Mathematics
Solve the problem.The players on the team were at least 18 years old and all were under 30. Express the ages x as an inequality and graph the values of x.
x = age
A. 18 < x ? 30
x = age
B. 18 ? x < 30
x = age
C. x < 18 or x ? 30
x = age
D. x ? 18 or x > 30
x = age
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Find the value of k for which the first polynomial is a factor of the second polynomial.x - 2; 4x3 + kx2 - kx - 4
A. k = 14 B. k = 4 C. k = -4 D. k = -14
Mathematics