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. 3.0 L
B. 1.0 L
C. 2.0 L
D. 4.0 L
Answer: C
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Solve the problem.Find equations for the horizontal and vertical tangent lines to the curve 
A. Horizontal: y = 0 at (0, 0), y = 5 at 
; vertical: x = 
at 
, x = - 
at 
B. Horizontal: y = 
at 
, y = - 
at 
; vertical: x = 5 at (5, 0), x = 0 at 
C. Horizontal: y = 
at 
, y = - 
at 
; vertical: x = 0 at (0, 0), x = 5 at 
D. Horizontal: y = 5 at (5, 0), y = 0, 
; vertical: x = 
at 
, x = - 
at 
Find the cube root.
A. 16 B. ±4 C. 4 D. 8
Find all vertical asymptotes of the given function.R(x) = 
A. x = -11, x = 7 B. x = -7, x = -30, x = 11 C. x = -11, x = 0, x = 7 D. x = -7, x = 0, x = 11
Use the graph to solve the problem.The circle graph below shows the results of the student council presidential election and the portion of the vote each person received. 
How many votes did Ann get?
A. 175 B. 203 C. 182 D. 140