When the elevator was out of service, debi walked down 21 flights of stairs. she stopped to rest after every 3 flights. how many times did debi stop to rest?

Mary had at least an 80% on her test write an inequality to represent this situation

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?

Are the corresponding angles congruent? explain why or why not.