Use a graphing utility to select the graph of the function below. Describe the behavior of the function as x approaches 0.
?
?
A. ?
As x ? 0, f(x) ? 0.
B. ?
?As x ? 0, f(x) ? 0.
C. ?
As x ? 0, f(x) ? 0.
D. ?
As x ? 0, f(x) ? 0.
E. ?
As x ? 0, f(x) ? 0.
Answer: A
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A. Acute B. Straight C. Right D. Obtuse
Rationalize the numerator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Find the slope and the y-intercept from the equation of the line. Sketch a graph of the equation.x = -1
A. m = -1; y-intercept = 0
B. m = undefined; y-intercept = none
C. m = 0; y-intercept = -1
D. m = undefined; y-intercept = none
Use Gaussian elimination and matrices to solve the system of linear equations. Write your final augmented matrix in triangular form and then solve for each variable using back substitution.x - y + 2z=-32x + z= -4x + 5y + z=-29
A. (-4, 0, -5) B. (0, -4, -5) C. (-4, -5, 0) D. (0, -5, -4)