Free mathematics tutorials

Free mathematics tutorials

• 1.
  Questions 1: If Logx(1 / 8) = - 3 / 2, then x is equal to A. - 4 B. 4 C. 1 / 4 D. 10
• 2.
   Question 2: 20% of 2 is equal to A. 20 B. 4 C. 0.4 D. 0.04  Questions 3: If Log 4 (x) = 12, then log 2 (x / 4) is equal to A. 11 B. 48 C. -12 D. 22
• 3.
   Questions 4: Thepopulation of a country increased by an average of 2% per year from 2000 to 2003. If the population of this country was 2 000 000 on December 31, 2003, then the population of this country on January 1, 2000, to the nearest thousand would have been A. 1 846 000 B. 1 852 000 C. 1 000 000 D. 1 500 000
• 4.
   Questions 5: fis a quadratic function whose graph is a parabola opening upward and has a vertex on the x-axis. The graph of the new function g defined by g(x) = 2 - f(x - 5) has a range defined by the interval A. [ -5 , + infinity) B. [ 2 , + infinity) C. ( - infinity , 2] D. ( - infinity , 0]
• 5.
   Questions 6: fis a function such that f(x) < 0. The graph of the new function g defined by g(x) = | f(x) | is a reflection of the graph of f A. on the y axis B. on the x axis C. on the line y = x D. on the line y = - x
• 6.
   Questions 7: Ifthe graph of y = f(x) is transformed into the graph of 2y - 6 = - 4 f(x - 3), point (a , b) on the graph of y = f(x) becomes point (A , B) on the graph of 2y - 6 = - 4 f(x - 3) where A and B are given by A. A = a - 3, B = b B. A = a - 3, B = b C. A = a + 3, B = -2 b D. A = a + 3, B = -2 b +3
• 7.
   Questions 8: Whena parabola represented by the equation y - 2x 2 = 8 x + 5 is translated 3 units to the left and 2 units up, the new parabola has its vertex at A. (-5 , -1) B. (-5 , -5) C. (-1 , -3) D. (-2 , -3)
• 8.
   Questions 9: Thegraphs of the two linear equations ax + by = c and bx - ay = c, where a, b and c are all not equal to zero, A. are parallel B. intersect at one point C. intersect at two points D. perpendicular
• 9.
   Questions 10: Thegraphs of the two equations y = a x 2 + b x + c and y = A x 2 + B x + C, such that a and A have different signs and that the quantities b 2 - 4 a c and B 2 - 4 A C are both negative, A. intersect at two points B. intersect at one point C. do not intersect D. none of the above
• 10.
   Questions 11: Forx greater than or equal to zero and less than or equal to 2 pi, sin x and cos x are both decreasing on the intervals A. (0 , pi/2) B. (pi/2 , pi) C. (pi , 3 pi / 2) D. (3 pi / 2 , 2 pi)
• 11.
   Questions 12: Thethree solutions of the equation f(x) = 0 are - 2, 0, and 3. Therefore, the three solutions of the equation f(x - 2) = 0 are A. - 4, -2, and 1 B. -2, 0 and 3 C. 4, 2, and 5 D. 0, 2 and 5
• 12.
   Questions 13: Thethree solutions of the equation f(x) = 0 are - 4, 8, and 11. Therefore, the three solutions of the equation f(2 x) = 0 are A. - 2, 4, and 11/2 B. - 8, 16 and 22 C. - 4, 8, and 11 D. 2, 19 / 2 and 7 / 2