Can someone help me out with 6 and 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?

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

40 describe the outliers from the scatter plot.