CollegeBoard The Official SAT Study Guide, 2020 Edition
The SAT Practice Test #10
My note: 我觉得像考 math literacy，有道题我没看懂, 多是直线方程。解答不太好。
- Math Test - No calculator 25 minutes 20 questions
Very simple
It is better to do, m = (31.79-21.89) /20-10 = 0.99
y = ax + b
21.89 = 0.99 * 10 + b, b = 11.99
- Math Test - calculator 55 minutes 38 questions
这个题我没看懂
When I think of a tangent line, I am kind of overthinking. I didn't notice y = c, it must be a horizontal line. So I try to draw a tangent line at any point. It is difficult. Then, I notice it is y = c. Everything becomes easy.
JUN讲物理单位很重要，可是我想是exchange rate 是进制问题，变成纯数学，只有数字没有单位
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