GRAND RAPIDS, Mich. — Gas prices in Michigan are back up on average after several weeks of cooling off, according to an AAA study. Michiganders are now paying an average of $3.17 per gallon of regular unleaded gas.
While this is a 12-cent spike from last week, it is still 9 cents less than this time last month and 21 cents less than this time last year.
Drivers should expect to pay about $47 for a full 15-gallon tank of gas…