1. 16.6Scotch whisky increases in value as it ages, at least up to a point. For any period of time, t, the value of a barrel is given by V = 100t － 6t 2. This function implies that the proportional rate of growth of the value of the scotch is (100 － 12t)/V. a.Graph this scotch value function. b.At what value of t is the barrel of scotch most valuable. c.If the real interest rate is 5 percent, when should this distiller bottle the scotch for immediate sale? d.How would the distiller’s decision change if the real interest rate were 10 percent? (Hint: You will have to use the quadratic equation to solve part d here.)

3. 16.8 題目請參照學生版課本