Question 1:
y = x² – 1
y = 8

Question 2:

p is a real number and p > 1

Question 3:

If the ratio students to teachers on a committee of 21 members is 8 to 6, how many members of the committee are students?

Question 4:

If a, b and c are odd integers, which of the following expressions must be an even integer?

Question 5:

The figure below shows two concentric circles each with center O. The radius of C1 is r₁, the radius of C2 is r₂, and r₁ = (√2)·r₂

Question 6:

Find the solutions of the x² + 3x – 18 = 0 equation.

Question 7:

The height h of the trapezoid ABCD is equal to the average of its two parallel sides.

Question 8:

In the x,y coordinate system, line l passes through the point P(2, 1) and is perpendicular to line y = x + 1.

Question 9:

In which of the following years was the difference between the revenues of company A and company B the lowest?

Question 10:

What is the approximate percentage of all employees of Company A that are operators?