The select button, the options are profit or loss. thank you very much

Cost, revenue, and profit are in dollars and x is the number of units. A rm knows that its marginal cost for a product is MC = 3X + 25, that its marginal revenue is W = 57 5X, and that the cost of production of 100 units is $17,660. (a) Find the optimal level of production. (b) Find the prot function. (c) Find the prot or loss at the optimal level