Why don’t we solve for x? do we never solve for X on QC questions? I get confused because on some questions for QC I would solve for x but then others I would not.

I would go with choosing numbers

Is it option D?

if x = -3, y can be anything, say y = 100. So xy = -300

If y = 4, x can be anything, say x = 100. So xy = 400

So we can’t say anything about xy = -12

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yes it is option D! hm… I sully solve for the variable like x=-3 Y=4 so

(X)(Y)=(-3)(4)= -12