The Official (CollegeBoard) SAT Math 1 - Practice 3
注意raw score 不是做对题的数目，要减去错的题数 ×0.25。做对46道题，做错4道题。
45 － 4×0.25 = 44, 分数750。
Errors: Q35, 44, 45, 50.
Q43 The sum of two roots of a quadratic equation is -b/a. The product is c/a
It is easy to elimanate A, B, C. To select D or E, Since g(x) without constant, you only need to test constant. If you plug (x-3) for x, since -3 is negative, x^3, x^2, x are all negative, thus, D is incorrect. then only E is left.
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