n obligation that has an interest rate that floats and that is reset on a daily or weekly basis, and that gives the holder the right to sell the obligation back to the issuer at the reset date, or at the final maturity date, is known as a(n): A perpetuity B collateralized debt obligation C variable rate demand obligation D exchange traded put option

You wish to retire in 13 years, at which time you want to have accumulated enough money to receive an annual annuity of $23,000 for 18 years after retirement. during the period before retirement you can earn 9 percent annually, while after retirement you can earn 11 percent on your money. what annual contributions to the retirement fund will allow you to receive the $23,000 annuity? use appendix c and appendix d for an approximate answer, but calculate your final answer using the formula and financial calculator methods.