Solve the system of equations by using the inverse of the coefficient matrix if it exists and by the echelon method if the inverse doesn't exist. 4x + 4y = 4 3x + 9y = 27
A. (-3, -4)
B. (4, -3)
C. (-3, 4)
D. No inverse, no solution for system
Answer: C
Mathematics
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in Hexidecimal?
a. ACE b. A83 c. 2C3 d. FF3 e. D33
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? 
A. 
B. 
C. 
D. 
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Solve the equation.
+ 
= 3
A. 
B. {2, 6}
C. 
D. 
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The graph of a one-to-one function f is given. Sketch the graph of the inverse function f-1, on the same set of axes. Use a dashed line for the inverse.
A. 
B. 
C. 
D. 
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