Provide an appropriate response.Suppose that you are solving a system of three linear equations in three variables by the row echelon method and you obtain the following augmented matrix. 
What row transformation would you perform next?
A. Multiply row 3 by - 
.
B. Add 
times row 2 to row 3.
C. Add -8 times row 2 to row 3.
D. Add -8 times row 1 to 4 times row 3.
Answer: C
Mathematics
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Evaluate the integral.
A. 
B. 
C. 
D. 
Mathematics
Determine the quadratic function whose graph is given.
A. f(x) = x2 - 6x - 8 B. f(x) = -x2 - 6x + 8 C. f(x) = x2 - 6x + 8 D. f(x) = x2 + 6x + 8
Mathematics
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.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Simplify the expression. Assume that all variables represent nonnegative real numbers.
- 3
- 2
A. -5
B. -16
C. -16
D. -5
Mathematics