You are worried about interest rate volatility. You decide to hedge your portfolio with a 10-year zero coupon bond (face value $100). (a) How much should you go short/long on this bond in order to make it immune to interest rate changes? Find out both the total dollar amount and the number of such bond. (b) What is the total value of the portfolio now?

Lauer corporation uses the periodic inventory system and has provided the following information about one of its laptop computers: date transaction number of units cost per unit 1/1 beginning inventory 210 $ 910 5/5 purchase 310 $ 1,010 8/10 purchase 410 $ 1,110 10/15 purchase 255 $ 1,160 during the year, lauer sold 1,025 laptop computers. what was cost of goods sold using the lifo cost flow assumption?