URGENTTTTTT!!!!

1) A European call option with a strike price of $55 costs $6.1. A European put option with the same strike price and expiration date costs $4.6. For what range of stock prices would a straddle lead to a loss?

2)The current price of a stock is $47.49. A trader sells 63 put options on this stock with a strike price of $42 when the option price is $4.49. The options are exercised when the stock price is $36.39. The trader's net profit or loss is equal to

3)A company enters into a long futures contract to buy 1000 units of a commodity for $20 per unit. The initial margin is $6,000 and the maintenance margin is $4,000. What futures price will allow $2886 to be withdrawn from the margin account?