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Putting it All Together: problem 1 "Potatoes" 1.) a.) Complete the square and find the vertex of the quadratic function. y = x2+4x - 21 b.) Factor and find the x-intercepts of the quadratic function. h(x) = x2+ 4x -21 c.) Given standard form, find the y-intercept, algebraically, of the quadratic function below. h(x ) = x2+ 4x -21 y-intercept d.) Sketch a graph of the quadratic function, labeling the vertex, y-intercept, and the x-intercept. Give the domain and range of your function. Domain Range