Provide an appropriate response.Suppose that you are solving a system of three linear equations by the row echelon method and obtain the following augmented matrix. 
What conclusion can you draw about the solutions of the system?
A. The system has exactly one solution.
B. The system has no solutions.
C. There is not enough information to draw any conclusion about the solutions of the system.
D. The system has infinitely many solutions.
Answer: B
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 0; local maximum at x = 2; concave up on (0, ?); concave down on (-?, 0) B. Local minimum at x = 2; local maximum at x = 0; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 0; local maximum at x = 2; concave down on (0, ?); concave up on (-?, 0) D. Local minimum at x = 2; local maximum at x = 0; concave up on (0, ?); concave down on (-?, 0)
Subtract.6.109 - 2.7
A. 3.309 B. 4.409 C. 3.399 D. 3.409
The graph of y = f(x) is given. Use the graph to find the function value.Find f(3).
A. 5 B. -7 C. 7 D. 1
Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the leading coefficient a of x2 should be positive or negative.
A. linear; positive B. quadratic; positive C. linear; negative D. quadratic; negative