5. The path of a firework that is launched from the ground can be approximated by the quadratic function h(d) = -0.05d2 + 3d +
5. The path of a firework that is launched from the ground can be approximated by the quadratic function h(d) = -0.05d2 + 3d + 15, where d is the horizontal distance, in metres. Use the quadratic formula to determine the width of the opening of the parabola formed by the path of the firework. Express your answer to the nearest hundredth of a metre
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