One sunny day, Ling decided to take a hike in the mountains. She left her house at 8 \, , drove at a constant speed of 45 miles per hour, and arrived at the hiking trail at 10 \, . After hiking for 3 hours, Ling drove home at a constant speed of 60 miles per hour. Which of the following graphs best illustrates the distance between Ling's car and her house over the course of her trip?

AMC 8 2022 Problem 10

AMC8 2022 年第 10 题

行程问题★★☆☆☆

One sunny day, Ling decided to take a hike in the mountains. She left her house at 8 \, \textscam, drove at a constant speed of 45 miles per hour, and arrived at the hiking trail at 10 \, \textscam. After hiking for 3 hours, Ling drove home at a constant speed of 60 miles per hour. Which of the following graphs best illustrates the distance between Ling's car and her house over the course of her trip?

在一个晴朗的日子，Ling 决定去山里远足。她早上 8 时离开家，以每小时 45 英里的恒定速度开车，在早上 10 时到达登山径。徒步运动 3 小时后，Ling 以每小时 60 英里的恒定速度开车回家。以下哪张图最好的表达了 Ling 的行程中她的汽车和她家之间的距离？

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