The function  f(x) = –0.3(x  – 5)2  + 5 is graphed. what are some of its key features? check all that apply. the axis of symmetry is  x  = 5.the domain is {x|  x  is a real number}.the function is increasing over (–∞, 5).the minimum is (5, 5).the range is {y|  y  ≥ 5}.