TRENTON, N.J. - Gas prices have been creeping higher in New Jersey and around the nation.AAA Mid-Atlantic says the average price of a gallon of regular gas in New Jersey on Friday was $2.90, up four cents from a week ago.Drivers were paying an average of $2.03 a gallon a year ago at this time.The national average price for a gallon of regular gasoline was $2.88, up two cents from last week.Drivers were paying an average of $1.79 a gallon a year ago at this time.___AdvertisementDOWNLOAD: FOX 29 NEWS APPSUBSCRIBE: Good Day Digest Newsletter | FOX 29 Philly on YouTubeFOLLOW: Facebook | Instagram | Twitter.