Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.

A. {(-2, -3)}
B. {(3, 2)}
C. no solution; ?
D. {(2, 3)}

Answer: D

Mathematics

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A.  hr
B.  hr
C.  hr
D.  hr

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A. ±15 B. -112.5i C. 15i D. ±15i

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Perform the indicated operation. Simplify if possible. + 

A.
B.
C.
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