The value C = C(d), in
American dollars, of the Canadian dollar is given by the graph in
the figure.
(a) Describe how the value of the Canadian dollar fluctuated
from 1990 to 2002. Give specific function values in your
description where they are appropriate.
(b) When was the Canadian dollar worth 70 American
cents?
(c) What was the average yearly decrease in the value of the
Canadian dollar from 1992 to 2000?
(d) For an American investor trading in Canadian dollars, what
would have been ideal buy and sell dates? (Give your answer correct
to the year.)
year to buy
year to sell
Explain your answer.