Solve the equation in the real number system.2x3 - x2 + 2x - 1 = 0
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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If possible, find the slope of the line passing through the two points.
, 
A. 
B. 
C. 
D. 
Mathematics
Find all solutions to the equation. Express the solution in degrees.cos x = -1
A. 360°n or 180° + 360°n B. 90° + 360°n or 270° + 360°n C. 360°n D. 180° + 360°n
Mathematics
Solve the problem.The profit from the expenditure of x thousand dollars on advertising is given by 
Find the marginal profit when the expenditure is 
A. -69 thousand dollars /unit B. 210 thousand dollars/unit C. 1190 thousand dollars/unit D. 126 thousand dollars/unit
Mathematics
Based on the graph, determine the range of f.f(x) = 
A. [0, 
]
B. [0, ?)
C. [0, 4]
D. [0, 4)
Mathematics