Sketch the graph on the coordinate system provided.y = 3 sin (x + 
)
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines.x + 0y = 90x + y = 4
A. x = 9; y = 4
B. x = 4; y = 9
C. x = 9; y = 2
D. x = 2; y = 
Mathematics
Multiply. Write your answer in a + bi form.(-5 - 8i)2
A. -10 - 16i B. 25 + 64i C. -39 + 80i D. -39
Mathematics
Rewrite as a single logarithm. Assume all variables represent positive real numbers.(logbx - logby) + 6logbz
A. logb xz6y
B. loga
C. logb 
D. logb
Mathematics
Solve the problem.If f(?) = cos ? and f(a) = 
, find the exact value of f(-a).
A. 
B. 
C. - 
D. - 
Mathematics