Answer:
C.The third option
Step-by-step explanation:
The greater than means more so in this case you are getting positive profit
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Answer:
{x\ x e U and x has a negative square root} is an empty set.
Step-by-step explanation:
If x e U, x is a negative real number, and they don't have a square root (they don't have even roots). Their square roots are complex numbers, not real ones.
