Match each function with its graph. 16. y= -x2 - 6x 17. y= -x2+6 18. y= x2 -6 19. y = x2 + 6x A. B. C. D. Graph each function. Label the axis of symmetry and the vertex. 20. f(x) = x2 + 4x - 5 21. y = 3x2 - 20x 22. y= -2x2 + 8x +9 23. f(x) = -x2 +4x +3 24. y= -2x2 - 10x 25. y = 2x2 - 6x + 1 26. Sports A baseball is thrown into the air with an upward velocity of 30 ft/s. Its See Problem 2. height h, in feet, after t seconds is given by the function h = -1612 + 30t + 6. How long will it take the ball to reach its maximum height? What is the ball's maximum height? What is the range of the function? 27. School Fair Suppose you have 100 ft of string to rope off a rectangular section for a bake sale at a school fair. The function A = -x2 + 50x gives the area of the section in square feet, where x is the width in feet. What width gives you the maximum area you can rope off? What is the maximum area? What is the range of the function