markup: the amount added to the cost to determine the asking price
net income: the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)
jacob: (Old Testament) son of Isaac; brother of Esau; father of the twelve patriarchs of Israel; Jacob wrestled with God and forced God to bless him, so God gave Jacob the new name of Israel (meaning `one who has been strong against God')