Solve the system using Gaussian elimination.
A. {(0 + w, 2 - 2w, 2 + 2w, w )|w is any real number}
B. {(0, 8, -12, -12)}
C. {(-1, 4, -2, 4)}
D. {(0, 2, 2, 2)}
Answer: D
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Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Perform the indicated operation and simplify if possible.
A. 
B. 6
C. 6
D. 5
Evaluate the integral by making a substitution and then using a table of integrals.
d?
A. - 
ln
+ C
B. - 
ln
+ C
C. - 
ln
+ C
D. - 
ln
+ C
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs.Entering GPACurrent GPA 
A. y= 0.02x + 4.91 B. y = 0.33x + 2.51 C. y = 0.03x + 3.67 D. y = 0.50x + 5.81