GIVING BRAINIEST to who ever answers hurry

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Which expression is equivalent to 5r6141 2r+st6

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?