a. Find the duration of a 6% coupon bond making annual coupon payments if it has three years until maturity and has a yield to maturity of 6%. Note: The face value of the bond is $1,000. (Do not round intermediate calculations. Round your answers to 3 decimal places.) b. What is the duration if the yield to maturity is 10%

A) the formula to calculate modified duration of bonds:

modified duration = [1 - (1 + y)⁻ⁿ] / y

modified duration = [1 - (1 + 6%)⁻³] / 6%  = 2.673 years

if you want to determine the Macaulay duration = modified duration x (1 + yield) = 2.673 years x 1.06 = 2.833 years

B)   modified duration = [1 - (1 + 10%)⁻³] / 10%  = 2.487 years

if you want to determine the Macaulay duration = modified duration x (1 + yield) = 2.487 years x 1.1 = 2.736 years

answer; (c) run the name by everyone you can;

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'