The function h(x) shown is the result of adding two functions, f(x) and g(x). Which statement could be used to describe the functions? both original functions have a domain of (−[infinity], [infinity]). Both original functions have a domain of [0. [infinity]). The domain of f(x) is [0, [infinity]) while the domain of g(x) is (−[infinity], 0]. The domain of f(x) is (−[infinity], 0] while the domain of g(x) is [0, [infinity]).