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.
Prices paid by Boston area consumers for utility (piped) gas, commonly referred to as natural gas, were $0.790 per therm, 15.2 percent below the national average in August 2015 ($0.932 per therm).egional Commissioner Deborah A. Brown noted that this was more than 95 cents below the August 2014 price of $3.547 per gallon. Utility (piped) gas prices averaged $0.790 per therm in the Boston area in August 2015. Area natural gas prices were down from one year ago when they averaged $1.084 per therm.