CREATE TABLE table_24675 ("State Rank by Revenue" FLOAT, "Company Name" TEXT, "National Rank" FLOAT, "Revenue  ( $billions )  2012 estimate" TEXT, "Headquarters City" TEXT, "Known for" TEXT)

What is the state rank of the company with 6.8 billion in revenue?
SELECT "State Rank by Revenue" FROM table_24675 WHERE "Revenue ($billions) 2012 estimate" = '6.8'
SELECT "State Rank by Revenue" FROM "table_24675" WHERE "Revenue ($billions) 2012 estimate" = '6.8'