If (3 - 4\(\sqrt{2}\))(1 + 3\(\sqrt{2}\)) = a + b\(\sqrt{2}\),  find the value of b

Find the sum for which $ 1,250.00 will amount to $ 2,031.25 at 12.5% per annum simple interest.

If log\(_3^{2x - 1}\) = 5, find the value of x

The population of a town increases by 3% every year. In the year 2000, the population was 3000. Find the population in the year 2003.

A  trader gave a change of # 540.00 instead of # 570.00 to a customer. Caculate the percentage error.