Gas prices are up $.07 a gallon in Iowa over last week. Triple A says the average cost for a gallon of regular unleaded is $2.49 a gallon in the state. The lowest price at the pump is in Davenport at $2.43. Drivers in Des Moines, Cedar Rapids, Waterloo and Cedar Falls are paying the most at $2.52 for regular gas. Nationwide prices are up a nickle over last week at $2.51.