[ Science not Biology. Why doesn't it simply have a 'science' option? ]
Select the correct answer.
In 2012, the United States produced 2,068 million metric tons of CO2 from electricity alone. Let x be the amount of CO2 produced by the United States that year from transportation. Based on the chart, what equation can be used to solve for x? Units are in million metric tons.
A. 2,068 * 32 = x/28
B. x/32 = 2,068/28
C. 2,068/32 = x/28
D. 32/28 = x/2,068
