A soccer ball manufacturer is planning to expand its workforce. It estimates that the number of soccer balls produced by hiring x new workers is given by 4 T(x) =- 0.25x* + 4x´ 0 < z < 12 • When is the rate of change of soccer ball production increasing and when is it decreasing? • What is the point of diminishing returns and the maximum rate of change of soccer ball production?

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