The Correct answer is D.
Explanation
The stopping distance is directly proportional to the square of the initial speed of the car. If 
represents the initial speed of the car, in miles per hour, and 
represents the stopping distance, you have that the stopping distance is a function of 
and that 
, where 
is a constant. Since the car’s stopping distance is 
feet for an initial speed of 
miles per hour, you know that 
. Therefore, 
, and the car's stopping distance for an initial speed of 
miles per hour is 
feet.
-
美国高考作文题目汇总：SAT写作历年题目
美国“高考(SAT)”的写作或作文题目是什么样的呢？小编整理了2012到2015年美国高考的作文题目也就是SAT写作历年题目让大家练练手。
- 【真题解析】详解新SAT语法考试中易混淆词汇题答题技巧
- SAT I 一日一问：2015年3月5日
- SAT I 一日一问：2015年3月4日
- SAT I 一日一问：2015年3月3日