The product of X and Y is less than or equal to four

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?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

What is the solution to the equation below? 3/x-2+6=square root x-2 +8