Samantha and 9 of her friends went out to eat after a game. The restaurant charges 15% for gratuity for groups of 8 or more people, and tax is 8.5%. Their total bill, without tax and gratuity, was $138.which expression will find the additional charge samantha and her friends will need to pay? (PART 1)
A.138 + (0.15 + 0.85)
B.138(0.15 + 0.85)
C.138(0.15)+0.085
D.138(0.15 + 0.085)

PART 2

what is the amount of gratuity and tax samantha and her friends have to pay?

A.$32.43
B.$105.57
C.$139.00
D.$170.43