2023年6月B卷 · 第 4 题

2023年6月B卷 · 原库模块 2 · Q4 原库参考解析

The graph shows the estimated concentration of a certain strain of bacteria, y , in millions of cells per mL of nutrient medium, over time x, in minutes since the initial measurement. According to the graph, which of the following is closest to the number of minutes it took for the estimated concentration of the bacteria to increase from 20 million cells per mL of nutrient medium to 30 million cells per mL of nutrient medium?