Use the graph of y = 3x\(^2\) + x – 7 above to answer the question
What is the minimum value of y?
- A. -10
- B. -7
- C. -4
- D. -1
- E. 2
Solve the following simultaneous equations: x+ y = 3/2; x – y = 5/2 and use your result to find the value of 2y + x
- A. -2
- B. -1
- C. 1/2
- D. 1
- E. 31/2
Solve the equation (x +2)(x – 7) = 0
- A. x = 1 or 8
- B. x = -2 or 7
- C. x = -4 or 5
- D. x = -3 or 6
- E. x= -5 or -2
Solve the equation 3x\(^2\) + 25x -18 = 0
- A. -3,2
- B. -2,3
- C. -2,9
- D. -9,2/3
- E. 2/3, 9.
If \(y \propto \frac{1}{x^2}\) and x = 3 when y = 4, find y when x = 2.
- A. 1
- B. 3
- C. 9
- D. 18
- E. 21
Factorize the expression x(a – c) + y(c – a)
- A. (a - c)(y - x)
- B. (a - c)(x - y)
- C. (a + c)(x - y)
- D. (a + c)(x + y)
- E. (a - c)(x + y)
What is the smaller value of x for which x\(^2\) – 3x + 2= 0?
- A. 1
- B. 2
- C. 3
- D. 4
- E. 5
Solve the inequality: \(\frac{1}{3}(2x – 1) < 5\)
- A. x < - 5
- B. X<-6
- C. X<7
- D. x <8
- E. x < 16
Which of the following could be the inequality illustrated in the sketch graph above?
- A. y≥2x+3
- B. y≤-3x+3
- C. y < 3x+2
- D. y≤x +3
- E. y≥3x+2.
Find the value(s) of x for which the expression is undefined: \(\frac{6x – 1}{x^2 + 4x – 5}\)
- A. +4 or+1
- B. -5 or +1
- C. -5 or -1
- D. +5 or -1
- E. \(\frac{1}{6}\)
If R = [2, 4, 6, 7] and S = [1, 2, 4, 8], then R∪S equal
- A. [1,2,4,6,7,8]
- B. [1,2,4,7,8]
- C. [1,4.7,8]
- D. [2.6.7]
- E. [2.4]
lf 16/9 , x, 1, y are in Geometric Progression (GP), find the product of x and y.
- A. 9/16
- B. 3/4
- C. 1
- D. 4/3
- E. 16/6
Find the nth term Un of the A.P., 11, 4, -3,……. .
- A. Un=19+7n
- B. Un=19-7n
- C. Un=18+7n
- D. Un= 18-7n
- E. Un= 17-7n
By selling some crates of soft drinks for N600.00, a dealer makes a profit of 50%. How much did the dealer pay for the drinks?
- A. N1,200.00
- B. N900.00
- C. N450.00
- D. N400.00
- E. N200.00
Given that log2a = log84, find a
- A. 21/3
- B. 42/3
- C. 42/3
- D. 22/3
- E. 23
Express 0.000834 in standard form
- A. 8.34 x 10-4
- B. 8.34 x 10-3
- C. 8.34 x 103
- D. 8.34 x 104
- E. 8.34 x 106
If three children shares N10.50 among themselves in ratio 6:7:8, how much is the largest share?
- A. N3.00
- B. N3.50
- C. N4.00
- D. N4.50
- E. N5.00
Find (101\(_2\))\(^2\), expressing the answer in base 2.
- A. 10101
- B. 11001
- C. 10010
- D. 11101
- E. 10110