Answer the flowing True/ False (T/F):

7- In opportunity cost approach, the proceeds from sold the old machine is treated as down payment toward purchasing new machine. (T/F) 8- Cash flow approach treat the amount of money received from the sale of old machine as the investment required keeping the old machine. This type of approach is more commonly practiced in replacement analysis. (T/F) 9- The marginal tax rate is the rate applied to the last dollar of income earned. (T/F)