Final answer:
The function that represents the cost (C) in dollars for printing a certain number of photos (P) is C(P) = 0.15P.
Step-by-step explanation:
The function that represents the cost (C) in dollars for printing a certain number of photos (P) is:
C(P) = 0.15P
This means that the cost of printing P number of photos is equal to 0.15 times the number of photos P. For example, if you want to print 10 photos, the cost would be:
C(10) = 0.15 * 10 = 1.50 dollars