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The graph of a quadratic function f is given. f(x ) = 4x2 + 8x - 3 (a) Find the coordinates of the vertex and the x- and y-intercepts. (Round your answers to one decimal place.) vertex (x, y ) = ( x-intercepts ( x , y ) = (smaller x-value) ( x , y ) = (larger x-value) y-intercept ( x , V ) = (b) Find the maximum or minimum value of f. The -Select- value of f is f(x) = (c) Find the domain and range of f. (Enter your answers using interval notation.) domain range