Select all that apply Select the statements that summarize how firms can increase productivity using economies of scale. Multiple select question. As firms expand their size and output, they can use more productive equipment. As firms expand their size and output, they are better able to recoup investments in new production methods and products. As firms expand their size and output, they can employ delivery methods that result in greater productivity. As firms expand their size and output, they can shift increases in cost to the price of the product