Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. no solution; ?
B. {(-6, 2)}
C. {(-5, 1)}
D. {(5, 2)}
Answer: C
Mathematics
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Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Mathematics
Solve the equation by factoring.(x + 5)(x + 1) = 21
A. {-2, 8} B. {-5, -1} C. {-8, 2} D. {1, 5}
Mathematics
Find the vertical asymptotes, if any, of the graph of the rational function.g(x) = 
A. x = 6 B. x = 6, x = -6 C. x = 6, x = -6, x = 0 D. no vertical asymptote
Mathematics
Graph the parabola with the given equation.(y + 2)2 = -6(x + 1) 
A. 
B. 
C. 
D. 
Mathematics