How do you write 1/3 of a number less than 9 is equal to 7

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?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Paul can type 60 words per minute and jennifer can type 80 words per minutes.how does paul's typing speed compare to jennifer's