Need . how do u do this? and which one would it

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?

Based on the figures as marked, /\rqs = —

Could someone with number 1 and 2