Question is in attached image. Thank you!

3) Consider the production function of a rm 3; = K \"Lb\". Output y can be sold at the price p. Firms face the price 1' for capital, K and w for labor L. Prot is given by arr = py rk ml the condition or prot maximization are given by 3'2 y _ _ _ _ _ -PT-, aL-PU ML \"1-0 (9) Show that this condition implies that prots are zero for this rm