Question

PLEASE HELPPPPPPPPPPPPPPPPPPPPPPP

Answer 1

`F=\\ x\ \to F=(-\infty;\ 4)\\\\H=\\ x\ \to H=[7;\ \infty)\\\\F\ \cap\ H=(-\infty;\ 4)\ \cap\ [7;\ \infty)=\O\\\\F\ \cup\ H=(-\infty;\ 4)\ \cup\ [7;\ \infty)`

F ∪ H is defined as the set that consists of all elements belonging to either set F or set H (or both).

F ∩ H is defined as the set composed of all elements that belong to both F and H