What has Chevrons Free Cash Flow looked like over the last five years what is going on? What does Chevron think will happen to its FCF in the next five years, approximately, why? Explain the FCF in terms of the four basic components: a.) NOPAT or EBIT x (1-tax rate); b.) Depreciation; c.) Capital Expenditures and d.) Net increases to Working Capital. Please show excel formulas!!