Tell me what to put in the blanks i’m confused plz me quick

Ifigured out the question and i dont know what to put here

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?

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2