Lester order a book for $35 he must pay a shipping charge of 12% show how to find 12% of 35 by using benchmark percents, then find the amount of the shipping charge show your work Idk the answer

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?