If x, y, and z are negative numbers such that z = 40x + 80y and x + y = -1, is z < -60?

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A

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C

D

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Source: Veritas Prep

If x, y, and z are negative numbers such that z = 40x + 80y and x + y = -1, is z < -60?

1) x > y
2) y < -0.5

The OA is D