COPPELL, Texas (AP) — Retail gasoline prices have slipped a penny this week across Texas. AAA Texas on Thursday reported the average price at the pump statewide settled at $2.22 per gallon. Nationwide gasoline prices held steady at $2.42 per gallon. Drivers in the Dallas area are paying the most for gasoline, at an average $2.26 per gallon.Read more on NewsOK.com