1
interest
added to the balance of the loan, credit card, or bank
paid to the lender
2
markup
amount added to the price of an item so the seller makes a profit
paid to the seller
3
markdown
subtracted from the price of an item
benefits the customer
4
commission
subtracted from the payment the store collects
paid to salesperson
5
sales tax
add to the price of the item
paid to the government
6
gratuity
added to the cost of the meal
paid to the server
7
percent increase
how much a quantity went up
8
percent decrease
how much a quantity went down