Provide an appropriate response.Suppose that you are solving a system of three linear equations and three variables by the row echelon method and you obtain the following augmented matrix. 
What row transformation would you perform next?
A. Multiply row 1 by 
.
B. Add 12 times row 1 to 4 times row 3 to obtain a zero in the third row, second column position.
C. Add row 1 to row 2.
D. Multiply row 2 by - 
.
Answer: D
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Find the volume of the solid generated by revolving the region about the given axis. Use the shell or washer method.The region bounded by x = 5
, x = - 5y, and y = 1 about the line y = 1
A. 
?
B. 
?
C. 
?
D. 5?
Provide an appropriate response.Playing a fair "shell game," the probability of winning the game should be given by p = 
. One person plays the game 50 times but only wins 7 times. Using n = 50, approximate P(X = 7) by using the normal approximation.
Fill in the blank(s) with the appropriate word(s).
In how many arrangements can 6 women and 6 men be placed in a line if the women and men alternate? ?
A. 720 B. 1,036,800 C. 518,400 D. 1 E. 1,555,200
Solve the absolute value equation. 
= 3
A. {-11, -5} B. {11} C. {11, 5} D. ?