The amount of sales tax charged is directly proportional to the amount of the purchase. anna pays $3.90 sales tax on a $60
purchase. what is the rate of the sales tax? what would the sales tax be on a $340 purchase?
3.5%; $11.19
5%; $17.00
6%; $20.40
6.5%; $22.10

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