Sketch the graph of the function.y = cos (-3?x)
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Evaluate the improper integral.
A. 120 B. 80 C. 100 D. 60
Mathematics
Solve the problem.Alan, Brianna, Claire, and Doug wish to equally divide a half chocolate, half vanilla cake. Each player values chocolate three times as much as they value vanilla. What fraction of the chocolate half of the cake would be considered a fair share to each?
A. 
B. 
C. 
D. 
E. none of these
Mathematics
Use partial fractions to find the sum of the series.
A. 
B. 
C. 1
D. 3
Mathematics
Solve the system of nonlinear equations. xy = 2x + y = 3
A. (2, 1), (1, 2) B. (-2, -1), (-1, -2) C. (-2, 1), (-1, 2) D. (2, -1), (1, -2)
Mathematics