For example, (x +1)*(x +1) is a term built from the constant 1, the variable x, and the binary function symbols + and *; it is part of the atomic formula (x +1)*(x +1) â¥ 0 which evaluates to true for each real-numbered value of x.
In recent weeks, the U.S. diesel fuel price has been hovering around $4.16 per gallon. LNG is selling for about $2.92 per diesel gallon equivalent, 30 percent less, according to Clean Energy Fuels' current price report, which is updated weekly.
California, where gas prices are usually highest, could be averaging almost $3 a gallon by June. GasPriceWatch.com says the national average for unleaded gas is $2.30 a gallon, 40 or 50 cents higher than last year. California gas prices are averaging $2.50 per gallon, compared to $2.10 in April 2004.By summer, Americans could be spending $5 billion more per month on gasoline than they did last year.alifornia gas prices are averaging $2.50 per gallon, compared to $2.10 in April 2004. By summer, Americans could be spending $5 billion more per month on gasoline than they did last year.