In a certain state, gasoline stations compute the price per gallon p, in dollars, charged at the pump by adding a 4 percent sales tax to the dealer's price per gallon d, in dollars, and then adding a gasoline tax of $0.18 per gallon. Which of the following gives the dealer's price per gallon d in terms of the price per gallon p charged at the pump?
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Ad = p - 0.22
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Bd=p/1.22
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Cd=(p/1.04)-0.18
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Dd=(p-0.18)/1.04
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Ed=(p-0.04)/1.18