A Tshirt manufacturer is planning to expand its workforce. It estimates that the number of Tshirts produced by hiring x new workers is given by Ttx) = 0.25::(4 + 5x3, 0 s x515. When is the rate of change of Tshirt production increasing and when is it decreasing\"? What is the point ofdiminishing returns and the maximum rate of change for Tshirt production? Graph T and T' on the same coordinate system. The rate of change of T-shirt production is increasing on E {Type your answer in interval notation.)