What does an individual’s effective tax rate indicate?

A.
the average income earned
B.
the average tax rate
C.
the minimum tax rate
D.
the next year’s tax rate

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18