Gasoline Prices In 2013, the price of gasoline in the United States inexplicably spiked early and then gradually dropped. The average monthly price (in cents) per gallon of unleaded regular gasoline for 2013 is shown in the following chart. Find the average rate of change per month in the average price per gallon for each time period. Source: U.S. Energy Information Administration. (a) From January to March (the peak) (b) From March to December (c) From January to December 390 378 380 374 368 369 366 365 370 360 360+ 364 350 342 340- 336 339 330 332 320 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Month Price

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