Maths 5.1: Find the simple interest earned on an investment of: $12000 at 18% for7 months
Maths 5.2: The rate of inflation of a country is at 12%. If Edward earns $72000 a year and $78000 the next year, is his salary keeping pace with inflation? Justify.
Maths 5.3: Factorise: 16x^2 - y^2 - 6y...