An artist is designing a memorial statue to have the shape shown in the graph to the right. The shape is bounded by two quadratic functions. The lower one, f(x), has the formula f(x)=16-x^2. The upper one is created such that g(x)=k•f(x) (a) determine the valué of k. (It will be a decimal.) (b) determine a formula for g(x) in terms of x