Describe the next row operation that should be performed to make the matrix closer to row echelon form.
A. Replace R3 with 6R2 + R3.
B. Replace R1 with - 2R2 + R1.
C. Replace R3 with -6R2 + R3.
D. Replace R3 with - 
R3 .
Answer: A
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Sketch the graph of the function.
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A. ?
B. ?
C. ?
D. ?
E. ?
Provide an appropriate response.Which of the following statements describes a way to verify that L is the left-hand limit of a function f(x) at x = x0 ?I. Given ? > 0, find an interval I = ( x0-?, x0+?), ? > 0, such that if x lies in I, then 
< ?.II. Given ? > 0, find an interval I = ( x0, x0+?), ? > 0, such that if x lies in I, then 
< ?. III. Given ? > 0, find an interval I = ( x0-?, x0), ? > 0, such that if x lies in I, then 
<
?. A. I only B. II only C. III only D. None
The graph below is one complete cycle of the graph of an equation containing a trigonometric function. Find an equation to match the graph. If you are using a graphing calculator, graph your equation to verify that it is correct.
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A. 
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C. ?
D. ?
E. ?
Find the x- and y-intercepts of f.f(x) = -x2(x + 6)(x2 - 1)
A. x-intercepts: -1, 0, 1, 6; y-intercept: 0 B. x-intercepts: -6, -1, 0, 1; y-intercept: -6 C. x-intercepts: -6, -1, 0, 1; y-intercept: 0 D. x-intercepts: -6, 0, 1; y-intercept: -6