IRVING, Texas (AP) — Texas and nationwide retail gasoline prices have slipped 4 cents this week amid lower crude oil costs. AAA Texas on Thursday reported the average price at the pump statewide settled at $3.41 per gallon. Motorists across the U.S. are paying an average $3.55 per gallon. The association survey found Amarillo has the cheapest gasoline in Texas this week at $3.32 per gallon.Read more on NewsOK.com