Grade 8 Exam / Mathematics Exam

The solution set of the equation $|2x - 3| = 7$ is:

What is the value of $x$ in the equation $\sqrt{x + 5} = 3$?

Which of the following is the simplified form of $\frac{3x^2 - 12}{x^2 - 4}$?

If $f(x) = 2x^2 - 3x + 4$, what is $f(-2)$?

What is the slope of the line passing through the points $(3, 5)$ and $(-2, -4)$?

In the figure below, if $\overline{AB} \parallel \overline{CD}$ and $m(\angle BAC) = 40^\circ$, then what is $m(\angle ACD)$?

The area of a circle is $100\pi\text{ cm}^2$. What is its radius?

What is the perimeter of a rectangle whose length is $12\text{ cm}$ and width is $8\text{ cm}$?

The sum of the interior angles of a polygon is $1440^\circ$. How many sides does the polygon have?

If the radius of a circle is doubled, by what factor is the area of the circle increased?