Smith’s Catering Company prepares and serves food for parties.

• The company charges a base fee of $100.

• The company also charges $18 per person for food.

Which function can be used to find c, the total amount it costs for a party of p people?

A c = 18p + 118c = 18 p + 118
B c = 100p + 18c = 100 p + 18
C c = 18p + 100 c = 18 p + 100
D c = 118p + 18