Gas prices rise a nickel in two weeks

Americans have been paying a bit more for gasoline over the past couple of weeks.

The new Lundberg Survey says the national average price for gas rose about 5 cents in the past two weeks.

Trilby Lundberg says the average price of regular gasoline is now $2.80 a gallon. The nation's lowest price is in Newark, New Jersey -- at an average of $2.56 a gallon. The highest is in San Francisco, where it's $3.17.