in 1989 the average price of a gallon was 0.93 cents. in 2007 the average price of a gallon was 2.77. find the percent change.

in 1989 the average price of a gallon was 0.93 cents. in 2007 the average price of a gallon was 2.77. find the percent change.

show your work or explain how you got your answer

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