新SAT官方Daily Practice每日一题数学推理题

小站教育2017-08-30 16:47:58

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摘要:本系列将给大家带来SAT官方的每日一练数学真题,各题型都有,持续更新,希望大家同步多练习。今天这里分享的是8月28日的数学推理题,一起来练习吧!

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

8月SAT数学官方Daily Practice 每日一练,点击

Davi will use 44 linear feet of wood to make a frame for a rectangular sandbox. The area, A, of the sandbox is given by the equation below where w is the width of the sandbox.

A(w)=22w-w²

What is the largest possible area, in square feet, that Davi can create with this piece of wood?

A.11

B.22

C.110

D.121

重点单词:

rectangular [rek'tæŋgjulə] n. 矩形

frame [freim] n. 框,结构,骨架v. 构成,把 ...

multiple ['mʌltipl] adj. 许多,多种多样的n. 倍数,并联

equation [i'kweiʃən] n. 相等,方程(式), 等式,均衡

答案:D

解析:

Choice D is correct.

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