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hey guys here is the real answers, I'm sorry if they change any questions: 1. A [1.4, 2.2] 2. D [-2, -9.5] 3. C [infinitely many] 4. D [none] 5. C [infinitely many] 6. D [none] 7. C 8. D 9. A [y≥60; 2x+2y≤260] 10. B [4 days] 11. A [$0.50 per cookie;
