Required:

a. Refer to Figure 17.1 and locate the E-Mini contract on the Standard & Poors 500 Index. If the margin requirement is 10% of the futures price times the multiplier of $50, how much must you deposit with your broker to buy one December contract? (Do not round intermediate calculations.)

b. If the December futures price increases to 3,100, what percentage return will you earn on your investment? (Do not round intermediate calculations. Round your answer to 2 decimal places.)

c. If the December futures price falls by 1%, what is the percentage gain or loss on your investment? (Input the amount as positive value. Do not round intermediate calculations.)