Round 36,993 to the nearest thousands

Multiplying an even number of negative numbers gives an answer that is choose from:

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?

Which of the following statement about pascal's triangle are true?