Question: GASOLINE SALES Gloria Newburg operates three selfservice gasoline stations in different parts of town. On a certain day, station A sold 600 gal of premium, 800 gal of super, 1000 gal of regular gasoline, and 700 gal of diesel fuel; station B sold 700 gal of premium, 600 gal of super, 1200 gal of regular gasoline, and 400 gal of diesel fuel; station C sold 900 gal of premium, 700 gal of super, 1400 gal of regular gasoline, and 800 gal of diesel fuel. Assume that the price of gasoline was $3.20/gal for premium, $2.98/gal for super, and $2.80/gal for regular and that diesel fuel sold for $3.10/gal. Use matrix algebra to find the total revenue at each station.