A version of this story first appeared in CNN Business’ Before the Bell newsletter. Not a subscriber? You can sign up right here.US gas prices hit their highest level in seven years during a busy Memorial Day weekend, as Americans traveled to meet up with friends and took much-needed vacations.What’s happening: Data from GasBuddy shows gas in the United States is at its most expensive since 2014. AAA puts the national average at $3.05 per gallon, up from $2.90 one

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