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题库 / OG2021-PS-107
To rent a tractor, it costs a total of x dollars for the first 24 hours, plus y dollars per hour for each hour in excess of 24 hours. Which of the following represents the cost, in dollars, to rent a tractor for 36 hours?
x + 12y
x + 36y
12x + y
24x + 12y
24x + 36y
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