The 4th term of an A.P. is 13 while the 10th term is 31. Find the 21st term.

• A. 175
• B. 85
• C. 64
• D. 45

Eggs now sell at N2.55 a dozen and oranges 2 for 10k. What will 20 dozen eggs and 100 oranges cost?

• A. N48.00
• B. N60.50
• C. N56.00
• D. N44.00

The gradient of a line joining (x,4) and (1,2) is 1/2. Find the value of x

• A. 5
• B. 3
• C. -3
• D. -5

The Nigerian 2011 presidential election was held on the

• A. 15th April
• B. 21st April
• C. 26th April
• D. 16th April

Given that \(\frac{6x-y}{x+2y}=2\), find the value of \(\frac{x}{y}\)

• A. \(\frac{3}{8}\)
• B. \(\frac{5}{8}\)
• C. \(\frac{4}{5}\)
• D. \(\frac{5}{4}\)

If x \(\alpha\) (45 + \(\frac{1}{2}y\)), which of the following is true?

• A. x varies directly as y
• B. x varies inversely as y
• C. x is partly constant and partly varies as y
• D. x vries jointly as 45 and directly as y

If x = 3 - \(\sqrt{3}\), find x² + \(\frac{36}{x^2}\)

• A. 9
• B. 18
• C. 24
• D. 27

Find the value of sin 45° - cos 30°

• A. \(\frac{2+\sqrt{3}}{4}\)
• B. \(\frac{\sqrt{2}+\sqrt{3}}{4}\)
• C. \(\frac{\sqrt{2}+\sqrt{3}}{2}\)
• D. \(\frac{\sqrt{2}-\sqrt{3}}{2}\)

Find r, if 6r7\(_8\) = 511\(_9\)

• A. 3
• B. 2
• C. 6
• D. 5

(a) Copy and complete the table for \(y = 3x^{2} - 5x - 7\)

(b) Using a scale of 2cm = 1 unit along the x- axis and 2cm = 5 units along the y- axis, draw the graph of \(y = 3x^{2} - 5x - 7\).

(c) On the same axis, draw the graph of \(y + 3x + 2 = 0\).

(d) From your graph, find the : (i) range of values of x for which \(3x^{2} - 5x - 7 < 0\) ; (ii) roots of the equation \(3x^{2} - 2x - 5 = 0\).