You have decided to use futures contracts to invest in silver at a settle price of $15 per ounce. Each futures contract has a standard size of 3,700 troy ounces and an initial margin requirement of $3,200. a. What is the leverage factor associated with these contracts? Note: Do not round intermediate calculations. Enter your answer rounded to 2 decimal places. b. If silver rises to $17 per ounce, what is your total percentage return? Note: Do not round intermediate calculations. Enter your answer as a percent rounded to the nearest whole number