Describe the next row operation that should be performed to make the matrix closer to row echelon form.
A. Replace R3 with 
R3 .
B. Replace R3 with -4R2 + R3.
C. Replace R3 with 4R2 + R3.
D. Replace R1 with - 3R2 + R1.
Answer: B
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A. 55 B. 54 C. 53 D. 56
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Graph the function.y = 5 cot
A. 
B. 
C. 
D. 
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