The average price of a gallon of gas in the Bradenton-Sarasota-Venice area has risen by 20.6 cents—9.9 percent—in the past month, according to numbers posted by AAA. "Last month, [the Organization of the Petroleum Exporting Countries (OPEC)] agreed to cut output by 1.2 million barrels per day beginning January 2017 and markets have continued to react to the production cut agreement with crude oil prices hitting an 18 month high," according to a AAA press release. As a result, "retail prices have steadily increased ... but the effectiveness of the deal and continued market impacts will hinge on all countries implementing the agreed to production levels."