Gas prices back up

DEARBORN, MI--   AAA Michigan says gasoline prices have risen roughly 4 cents during the past week to a statewide average of about $3.57 per gallon. 

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The auto club said Monday the average is about 34 cents per gallon more than last year at this time.

Of the Michigan cities it surveys, AAA Michigan said the cheapest average price for self-serve unleaded fuel is in the Traverse City, Saginaw and Bay City areas, where it's about $3.51 a gallon. The highest average is in the Ann Arbor area at about $3.61.

Dearborn-based AAA Michigan surveys 2,800 Michigan gas stations daily.