Two quadratic functions are represented below. f(x)=-x^2+4x-3
(the other is the graph)
A. In two or more complete sentences, explain how you can determine the maximum value of the quadratic functions, f(x) and g(x).
B. Which function has the greater maximum value, f(x) or g(x)?

please help me i dont understand this at all and i need to. thank you so much if you answer ill give brainliest too