10. Geddy SHORTS eight S&P 500 Futures Contracts with a futures price of 2000. Geddy's margin requirement is 8%. His maintenance margin is 75%. The margin account earns 6% compounded continuously. The margin account is marked to market weekly. At the end of one week after the purchase, the S&P futures price has fallen to 1980. Calculate Geddy's margin call. 12. Neil purchases ten S&P 500 Futures Contracts with a futures price of 3300. Neil's margin requirement is 12%. His maintenance margin is X%. The margin account earns 5% compounded continuously. The margin account is marked to market weekly. At the end of one week after the purchase, the S&P futures price has fallen to 3225. Neils margin account is now 17941.61 less than the maintenance margin. Determine X