Evaluate the integral by using multiple substitutions.
dr
A. -sin 
+ C
B. 
+ C
C. 
sin 
+ C
D. 
sin 
+ C
Answer: C
Mathematics
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Solve the problem.The number of cases of a certain strain of influenza in the world are shown in the table for various years.
Let f(t) be the number of cases (in thousands) in the year that is t years from 2003. The equation is 
Predict when there will be 2 thousand cases.
A. 2026 B. 2028 C. 2025 D. 2027
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Determine the vertex of the graph of f.f(x) = 2x2 - 20x + 51
A. (-1, -5) B. (1, 5) C. (-5, -1) D. (5, 1)
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Complete.374 mL = L
A. 374,000 B. 0.374 C. 3.74 D. 37,400
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