At a growth (interest) rate of 8 percent annually, how long will it take for a sum to double? To triple? Use Appendix A for an approximate answer, but calculate your final answer using the formula and financial calculator methods.

Amathematical approximation called the rule of 70 tells us that the number of years that it will take something that is growing to double in size is approximately equal to the number 70 divided by its percentage rate of growth. thus, if mexico's real gdp per person is growing at 7 percent per year, it will take about 10 years(=70/7) to double. apply the rule of 70 to solve the following problem. real gdp per person in mexico in 2005 was about $11,000 per person, while it was about $44,000 per person in the u. s. if real gdp per person in mexico grows at the rate of 5 percent per year: how long will it take mexico's real gdp per person to reach the level that the united states was at in 2005? (hint: how many times would mexico's 2005 real gdp per person have to double to reach the u. s.'s 2005 real gdp per person?

Which of the following best describes a fractional reserve banking system? a. a banking system in which a large portion of the bank's assets are digital money rather than bills and coins. b. a banking system in which banks keep a portion of deposits on hand to satisfy their customer's demands for withdrawals. c. a banking system in which banks have only partial control over the interest rates they charge on loans. d. a banking system in which net worth is calculated by subtracting a fraction of liabilities from assets. 2b2t

Which of the following statements is correct? a) one drawback of forming a corporation is that it generally subjects the firm to additional regulationsb) one drawback of forming a corporation is that it subjects the firms investors to increased personal liabilitiesc) one drawback of forming a corporation is that it makes it more difficult for the firm to raise capitald) one advantage of forming a corporation is that it subjects the firm's investors to fewer taxese) one disadvantage of forming a corporation is that it is more difficult for the firm's investors to transfer their ownership interests