The average price of a gallon of self-serve regular gasoline in the Inland Empire rose three-tenths of a cent Monday to $4.09, one day after decreasing two-tenths of a cent.

   The average price in Riverside and San Bernardino counties is 1.3 cents more than one week ago and 1 cent higher than one year ago but 2.2 cents less  than one month ago, according to figures from the AAA and Oil Price Information Service.

   Since increasing by 1 cent on Tuesday, the average price has risen three times and dropped three times, each time by four-tenths of a cent or less.