- Exxon Mobile, major oil producer, considers hedging through buying a 100-strike put option of bil for $2. Effective interest rate is 3%. Please write down the net income function of unhedged and medged positions for Exxon Mobile. Draw the net income graphs in excel. (Fixed Cost=$330; Variable Cost=$50) - Exxon Mobile, major oil producer, considers hedging through buying a 100-strike put option of bil for $2. Effective interest rate is 3%. Please write down the net income function of unhedged and medged positions for Exxon Mobile. Draw the net income graphs in excel. (Fixed Cost=$330; Variable Cost=$50)