HELP I DONT KNOW WHAT TO DO

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?

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal