due ASAP homework question

The average price of a gallon of gas in 2010 jumped $0.43 (18 percent) from $2.36 in 2009 (to $2.79 in 2010).

Conduct a horizontal analysis by calculating the year-over-year changes in each line item, expressed in dollars and in percentages for the income statement of Chevron Corporation for the year ended December 31, 2010 (amounts in billions). (Enter your answers in billions (i.e., 10,000,000,000 should be entered as 10). Round percentage values to 1 decimal place.)

Chevron Corportation

Income Statements

dollars in billions

year ended Dec 31

                                                 2010   2009   

Total Revenues                        $275   $228       Change all in Dollars and percentage

Cost of crude oli and products  $120  $102

Other operating cost                 $61      $55

Income before income text       $94        $71

Income Tax expense                $41        $22

Net income                                $53        $49