Pump prices slide as crude oil falls to​ six-year low The average price for regular gasoline at U.S. pumps fell almost 4 cents in March to​ $2.50 a gallon. The price of crude oil dropped to​ $43.46 per barrel on March​ 17, the lowest since March 2009. ​Source: Bloomberg Business​, March​ 23, 2015 Explain the effect of a lower crude oil price on the supply of gasoline. A fall in the price of crude oil will​ ______.