please help me with these two questions!!!

7. (10 pts) The University of Michigan publishes the Consumer Sentiment index. This is an empirical way to measure consumer attitudes and expectations and is used to evaluate economic trends and prospects. This index is a leading indicator of future consumer spending. The latest published Index signaled that consumer are very optimistic about their future spending pattern. (10 pts) Use the loanable funds model to determine the net effect of this increase in consumer optimism on the country's real interest rate and real exchange rates... 8. (10 pts) Compute the expected return for the following portfolio Security Price per share Expected return on security 5% Number of shares in portfolio 50 30 20 A B C $12 10 15 18 00 20