Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set. x + y = 45x + 5y = 20
A. {(5, -1)}
B. Cramer's rule does not apply since D = 0; ?
C. Cramer's rule does not apply since D = 0; {(4 - y, y)}
D. {(0, 0)}
Answer: C
Mathematics
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