1. You purchase one IBM July 120 call contract for a premium of $5. You hold the option until the expiration date when IBM stock is at $123 per share on the market. How much profit or loss you will realize on the investment?

2. You write one IBM July 120 call contract for a premium of $10. You hold the option until the expiration date when IBM stock is at $115 per share. How much profit or loss you will realize on the investment?

3. Suppose you purchase one Texas Instruments August 75 call contract quoted at $8.50 and write one Texas Instruments August 80 call contract quoted at $6. If, at expiration, the price of a share of Texas Instruments stock is $79, your profit would be?

4. You established a straddle strategy for Tesla aiming for expiration date of this June. Tesla June 250 call contract has a premium of $18 and Tesla June 250 put contract has a premium of $17. Current stock price of Tesla is at 252. If Tesla's stock price decreased to $200 by June, how much profit or loss you will realize on the investment? At what price range by expiration date will you lose money on your straddle strategy?