A man invested a sum of N280.00 partly at 5% and partly at 4%. if the total interest is N12.80 per annum, find the amount invested at 5%
Resolve \(\frac{3}{x^2 + x - 2}\) into partial fractions
Find all values of x satisfying the inequality -11 \(\leq\) 4 - 3x \(\leq\) 28
