the safe drive insurance company charges young male drivers more for car insurance than it charges all other drivers explain two features of the population pyramid which safedrive might use as its justification for doing this

I think your looking for PEMDAS. Typical you would find the value of the ,ath expression using PEMDAS. PEMDAS stands for Parentheses Exponents Multiplication Division Addition Subtraction. When using PEMDAS (order of operation) you have to use each letter in order, So look for parentheses and if their aren't any look for the exponents which would look like  then you would do all multiplication and division then addition and subtractions