SAT数学：今日份的练习题（附答案和详解）

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Read the following SAT test question and thenclick on a button to select your

answer.

Karim has a $35 gift card to his favorite restaurant. The tax on his meal is

14.3%. Karim would also liketo leave a $5 tip. If c represents Karim's pretax

bill, in dollars, and he wants to pay the entiremeal amount, including tip and

tax, using the gift card, which of the following inequalities bestmodels the

situation described above?

A.1.143c-5≥35

B.1.143c+5≤35

C.0.143c-5≤35

D.0.143c+5≥35

答案：B

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 space c+0.143c+5.

Next, combine like c terms to get 1.143c. So, the final inequality for

Karim's situation is 1.143c+5≤35.

以上就是为大家整理的SAT数学习题，希望能够帮助到大家。易伯华会一直陪在大家身边，备考的宝宝们加油哦!