the cost of having photos taken includees fee and $12 for each photo.Mrs.fong buys 6 photos for a total cost of $87.what

Answer:
The rate of change is $12/photo and the sitting charge would be 15.
y = 12x + 15
Step-by-step explanation:
Multiply 6 * 12 and subtract that from 87.
6 * 12 = 72
87 - 72 = 15