Problema Solution
the average cost of regular gasoline in Ohio increased by 73% from 2004 to 2007. if the average cost of a gallon of gas in 2004 was 2.069, what was the average cost in 2007? (round to the nearest cent)
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let x be the new cost of regular gasoline in 2007
the average cost of a gallon of gas in 2004 was $2.069
the average cost of regular gasoline in Ohio increased by 73% from 2004 to 2007:
x = 2.069 + 0.73*2.069
x = $3.58
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the average cost of regular gasoline in 2007 was $3.58.