Here is the link to the playlist of videos that explain all of the math questions in the 2017 October SAT Question and Answer Service test. The playlists are separated by sections. Section 3 of the math section does not allow use of calculator, whereas the calculator is permitted in Section 4 of the math section.

## SAT math practice question: Functions and real values

Try the following SAT math question that tests an understanding of when functions are defined.

For what values of $a$ is the expression $\sqrt{9-a^2}$ a real number?

- $\quad |a| \geq 9$
- $\quad |a| \leq 9$
- $\quad |a| \geq 3$
- $\quad |a| \leq 3$

## 2017 PSAT Wednesday Test: Video explanations

Here is the link to the playlist of videos that explain all of the math questions in the 2017 PSAT Wednesday test that was conducted on the 11th of October: **2017 PSAT Wednesday Test Video Explanations**.

## SAT math practice question: Dividing algebraic expressions

Try the following SAT math question that deals with algebraically dividing expressions.

Which of the following is equivalent to $\dfrac{x^2-2x-3}{x+2}$ ?

- $\quad x \, -\, \dfrac{3}{x+2}$
- $\quad x \,- \, \dfrac{7}{x+2}$
- $\quad x \, – 4 \, + \dfrac{5}{x+2}$
- $\quad x + 4 \; – \; \dfrac{11}{x+2}$

## 2017 May SAT Test: Video explanations

Here is the link to the playlist of videos that explain all of the math questions in the 2017 May SAT test.

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