Examine how investment banks help other firms and the economy by answering each of the following questions: (a) Describe the financial services offered to firms by investment banks. (b) Why are investment banks usually able to acquire financial capital for firms at a lower cost than they could acquire it directly themselves? (c) Should firms directly finance in the international capital market and/or have investment banks sell their debt and equity securities in foreign countries? (d) Should firms maintain a long-term customer relationship with a single investment banker over many years, or shop for and switch to the best available investment banker for new issue of their securities? (e) If investment banks were not so heavily regulated by government, would they be good for the economy?