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SAT官方每日一题附答案和解析[数学](2016年3月24日)

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Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

Hareg's motorcycle uses 1 gallon of gas for every 30 miles traveled when traveling at an average speed of 60 miles per hour. The motorcycle's gas tank has 5 gallons at the beginning of a trip. If Hareg's motorcycle travels at an average speed of 60 miles per hour, which of the following functions best models the number of gallons of gas, g(h), remaining in the tank h hours after the trip begins?

(A) g(h)= 5-2h
(B) g(h)= 5-2/h
(C) g(h)= (5-60h)/30
(D) g(h)= (5-30h)/60

重点单词   查看全部解释    
multiple ['mʌltipl]

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adj. 许多,多种多样的
n. 倍数,并联

联想记忆
gallon ['gælən]

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n. 加仑(容量单位)

 
tank [tæŋk]

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n. 坦克,箱,罐,槽,贮水池
vt. 把 .

 

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