A jacket at a clothing store is being discounted by 10% if the jacket was originally priced at X dollars which of the following expressions does not represent the final price of the jacket before sales tax is added

Afitness center has 2 membership plans one has a low dollar sign up fee of 15 dollars and costs 38 dollars per month to join. a second plan has a higher sign up fee of 78 dollars but a lower monthly fee of 31 dollars for what number of days of the month is the coat the same