Exercise $9$: You have just purchased $100$ shares of General

Electric stock at $$60$ per share. You will sell the stock when its

market price has doubled. If you expect the stock price to

increase $20\%$ per year, how long do you expect to wait before

selling the stock? Draw the CF$,$ list all variables you have and find

N$.$Exercise $10$: Suppose you make an annual contribution of $$3,000$

to your savings account at the end of each year for $10$ years. If

your savings account earns $7\%$ interest annually, how much can

be withdrawn at the end of $10$ years? Draw the CF diagram, list

all the variables you have, and find $F.$