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Which two statements are true about a system? 1. a system is a group of objects analyzed as one unit. 2. energy that moves across system boundaries is conserved. 3. there’s only one way to define the boundaries of a system. 4. all systems are made by humans.

2(4p+1)/5< = (3+12p)/4 its less than or equal solve it for me an with explanation plz

Pest analysis, a framework for understanding different facets of the world in which a business operates, looks particularly at political, social, and technological factors.