Which choice is equivalent to the expression below?

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Taking algebra two apex courses and need with these questions

Find the quotient. 50a2 – 98b2 -5a +7b