Problem
A competitive firm produces output using three fixed factors and one variable factor. The firm's short-run production function is q = 305x - 2x2, where x is the amount of variable factor used. The price of the output is $2 per unit and the price of the variable factor is $10 per unit. In the short run, how many units of x should the firm use?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.