The price of gasoline in Rhode Island is up another five cents per gallon ahead of the holiday weekend. AAA Northeast says Monday its weekly survey found self-serve regular selling for an average of $2.95 per gallon. That's three cents high than the national average. The average price of gasoline in Rhode Island is 64 cents higher than it was a year ago. As Memorial Day approaches, and despite rising gas prices, about 1.7 million New Englanders are expected to travel by car.