Tip is ___. * 1 point
an additional amount charged by the restaurant similar to sales tax
a percentage you may add to a restaurant bill for good service
a discount offered by restaurants
a set amount charged in addition to all other items at a restaurant
A gratuity (normally called a tip) is a sum of money customarily given by a client or customer to certain service sector workers for the service they have performed, in addition to the basic price of the service.
