Solve the system by the addition method.x2 - y2 = 11x2 + y2 = 25
A. {(3
, 
), (-3
, 
), (3
, -
), (-3
, -
)}
B. {(3
, 
), (-3
, 
)}
C. {(0, 0)}
D. {(3
, 
), (-3
, -
)}
Answer: A
Mathematics
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A. x2 - 
x - 
B. x2 + 
x - 
C. x2 + 
D. x2 - 
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Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.log4(x + 1) = 1 + log4(x - 4)
A. 
B. 
C. 
D. 
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Solve by the substitution method. x + y = 76x + 6y = 42
A. {(x, y)| x + y = 7} B. {(6, 1)} C. ? D. {(0, 0)}
Mathematics
Sketch the graph.
+ 
= 1
A. 
B. 
C. 
D. 
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