Solve by the method of elimination by substitution.x + 8y = 0x - 8y = 80
A. x = 40, y = 5
B. x = 8, y = -1
C. x = 40, y = -5
D. x = -5, y = 40
Answer: C
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B. domain: (-?, ?); range: (- 5, ?)
C. domain: (-?, ?); range: (-?, ?)
D. domain: (-?, 0) ? (0, ?); range: (-?, ?)
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