Kim is a photographer who specializes in family portraits. She charges a $75 sitting fee plus $18 for each print ordered. Which equation represents the amount, a, Kim would charge for a photo session when p prints are ordered?

Respuesta :

a=75+18p

A is total charge 
the amount no matter what would be 75 and 18 per copy
a is the number of copies bought which cost 18 per piece