CollegeBoard Test #8

I did question #11 (wrong). #30, #37 (wrong)

注意 11, 36题

Math question without a calculator, 25 minutes, 20 questions

Math question with a calculator, 55 minutes, 38 questions

CollegeBoard Test #9

 CollegeBoard Test #9 The Official SAT Study Guide2020 Ed

还是直线方程居多，SAT考题有点像智力测验

• Math Test  - No calculator    25 minutes   20 questions

错了4道

• Math Test  - calculator    55 minutes   38 questions

Don't let 3/4 to catch you. I am so confused with a serving is 3/4. Don't think a serving should be one cup.

I am a little put off by every 10 years until I realize it should be linear equation. 

我想了好一会，才想到应该这样解。 

CollegeBoard Test #10 Official SAT Study Guide2020 Ed

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