Your discount brokerage firm charges $9.10 per stock trade. How much money do you need to buy 240 shares of Pfizer, Inc. (PFE), which trades at $49.22? (Round your answer to 2 decimal places.) Amount needed $ You would like to buy shares of Sirius Satellite Radio (SIRI. The current ask end bid quotes ire $4.42 and $4.39, respectively. You place a market buy order for 650 shares that executes at these quoted prices. How much money did it cost to buy these shares? (Round your answer to 2 decimal places.) Cost of shares $