Gas prices drop slightly this week, prices in Missouri remain cheapest in US

Missouri continues to be the cheapest state in the country to get gas according to AAA, even as gas prices remain high. The average price for a gallon of gas in Missouri was $3.77 this week, that's 45 cents below the national average. Of all the metropolitan areas in the state, Joplin was the cheapest at $3.61 and Columbia and Cape Girardeau were the most expensive at $3.89. St. Louis averaged $3.83 this week. The average price of gas in Missouri this week is about 8 cents below the recent peak…