The value c Co. in American dollars, of the Canadian dollar is given by the graph in the rigure. S18+ 0.0 + C) Canddele + + sos0 L 1920 1919 (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 This answer has not been graded yet. (b) When was the Canadian dollar worth 75 American cents? (c) What was the average yearly decrease in the value of the Canadian dollar from 1996 to 20007 (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