For a certain company, the cost for producing items is 35x +300 and the revenue for selling z items is 75x0.5x2. The profit that the company makes is how much it takes in (revenue) minus how much it spends (cost). In economic models, one typically assumes that a company wants to maximize its profit, or at least wants to make a profit! Part a: Set up an expression for the profit from producin and selling items. We assume that the company sells all of the items that it produces. (Hint: it is a quadratic polynomial.) Part b: Find two values of r that will create a profit of $50. The field below accepts a list of numbers or formulas separated by semicolons (e.g. 2; 4; 6 or x+1;2-1). The order of the list does not matter. To enter va, type sqrt(a). Part c: Is it possible for the company to make a profit of $2,500?