6: Betty and Bob buy 3 October 70 calls @ $8 and sell 5 October 75 calls @ $4. At October expiration the stock is $80 per share. Algebraically find their profit/loss i.e. their P&L. They have a profit b. loss (circle one) of or per share quoted price _total dollars. Be sure to indicate either a profit or loss and answer as per share quoted price and total dollars. Problem 9: Beulah Brokerage Co. offers a portfolio of stocks whose yearly rate of return, Y, versus that of the stock market, X is given by X (in percent) Y (in percent) 5 10 10 22.5 Find the equation of the Least Squares Line for Y vs X. 15 22.5 20 30 A. If the market return is 30% then predict the return of the portfolio. B. If the market return is 0% (flat market) then predict the return of the portfolio (its Alpha)