I suggest you, as the first step, to start with a definition of an efficiency relation. Examples: efficiency=(total emitted energy)/(supply energy) efficiency=(emitted energy in a range of frequencies)/(supply energy) efficiency=(emitted energy in a range of frequencies and over a solid angle)/(supply energy)
Springdale, AR Lowest Regular Gas Prices Summary. There are 28 Regular gas price reports in the past 5 days in Springdale, AR. The average Regular gas price in Springdale, AR is $2.12, which is $0.29 lower than U.S. national average Regular gas price $2.41. The lowest Regular gas price is $2.05 of Murphy Express located at 7250 W Sunset Ave, Springdale, AR 72762.
Lower gas prices could spark similar price battles around the country. The average price of a gallon of regular gas Wednesday was $2.746, down more than 50 cents from a year ago, according to AAA's Fuel Gauge Report. In the oil-producing state of Oklahoma, it was even cheaper: an average of $2.532 a gallon.