NEW YORK — Gas prices jumped an average of 10 cents per gallon over the last two weeks in the wake of Hurricane Rita, according to a Reuters survey. Since Sept. 23, self-serve regular unleaded gas has spiked 10.4 percent to $2.9117 a gallon on Oct. 7, the nationwide Lundberg survey said after monitoring about 7,000 gas stations. That average is about 92 cents higher than what the Lundberg survey reported a year ago. Anchorage, Alaska had the lowest average in the country at $2.65 a gallon. Honolulu turned in the highest prices at an average of $3.38 a gallon on Oct. 7. Trilby Lundberg, the survey editor, told Reuters that gas could return to lower prices in the coming weeks as closed refineries begin to reopen. Additionally, there has been more importing of gasoline because of the domestic supply shortages.