Having the following questions find out the value of output and profit in: a, cournot b, stackelberg c, collusion. P(x)=400-5x. C1=30x C2=10x²

To find the value of the output and profit in each market structure (Cournot, Stackelberg, and collusion), we need additional information such as the number of firms, the demand function, and the cost function. The information provided only includes the demand function (P(x) = 400 - 5x) and the cost functions for two firms (C1 = 30x and C2 = 10x²), but doesn't specify the number of firms or the specific strategies followed by the firms in each market structure.

Could you please provide more details or complete the question?