LANSING, Mich (WQTX) A new survey finds the average price of regular gasoline in the United States has jumped four-cents in the last two weeks. The Lundberg Survey of fuel prices released Sunday says the price of a gallon of regular is $2.91. Analyst Trilby Lundberg says the average price for a gallon of mid-grade was $3.05, and premium was at $3.16. She expects prices to increase as much as 10 cents the rest of the year. In Michigan, the average price is $3.02 per gallon.