How long will it take $900 to double itself if it is invested at 11% interest compounded semiannually? Please round the answer to the nearest tenth.
A. 6.5 years
B. 9.5 years
C. 7.0 years
D. 5.5 years
E. 7.5 years
Answer: A
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Solve the problem.How many different three-digit numbers can be written using digits from the set {2, 3, 4, 5, 6} without any repeating digits?
A. 20 B. 10 C. 120 D. 60
Rationalize the denominator and simplify. 
A. 60
B. 
C. 11
D. 
Find the vertex, focus, and directrix of the parabola with the given equation.(y + 3)2 = -4(x - 2)
A. vertex: (-3, 2) focus: (-4, 2) directrix: x = -2 B. vertex: (2, -3) focus: (3, -3) directrix: x = 1 C. vertex: (2, -3) focus: (1, -3) directrix: x = 3 D. vertex: (-2, 3) focus: (-3, 3) directrix: x = -1
Graph the solution set of the system of inequalities or indicate that the system has no solution.y > x23x + 2y ? 6
A. 
B. 
C. 
D. 