新SAT官方Daily Practise每日一题数学函数题

小站教育2017-06-12 14:51:27

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摘要:今天起,本系列将给大家带来SAT官方的每日一练真题,各个项目都有,持续更新,希望大家同步多练习。今天这里分享的是6月8日的数学函数题,一起来练习吧!


答案:D

解析:

Choice B is correct. Karim's total meal cost consistsof three parts: Karim's pretax bill, the tax, and thetip, all added together. That amount will need to beless than or equal to Karim's gift card amount.

Since c represents the cost, in dollars, of the pretax bill, it should be multiplied by 0.143 (thetax in decimal form). Since Karim has decided to tip $5, the total meal cost can be representedby the expression c+0.143c+5.

Next, combine like c terms to get 1.143c. So, the final inequality for Karim's situation is1.143c+5≤35.

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