Gas prices went up more than 30 cents a gallon last week. How high could they go?
Gasoline prices are displayed at a Mobil gas station on April 29 in Portland, Ore. Jenny Kane/AP hide caption toggle caption Jenny Kane/AP Gas prices in the U.S. have gone up more than 30 cents a gallon in the last week and are slated to continue rising as the Strait of Hormuz remains closed amid…