Match the function with its graph.1) y = tan x2) y = cot x3) y = -tan x 4) y = -cot xA)B)
C)D)
A. 1A, 2B, 3C, 4D
B. 1B, 2D, 3C, 4A
C. 1A, 2D, 3C, 4B
D. 1C, 2A, 3B, 4D
Answer: D
Mathematics
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Solve. 77n2 + 49n = 0
A. 
, 0
B. 
, - 
C. - 
, 0
D. 0
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Multiply or divide.(-10)(-2)
A. -30 B. 22 C. 20 D. 30
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Sketch a typical level surface for the function.f(x, y, z) = x - y2 - z2
A. 
B. 
C. 
D. 
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Answer the question.The following table gives the electricity usage (in kilowatt hours) for the Peters family for six months.
What is the average electricity usage for the months January through April?
A. 988.54 kwh B. 977.55 kwh C. 983.56 kwh D. 975.251 kwh
Mathematics