Alexandra has a home-based business putting on children’s parties. She charges $60 to design the party and then $4.00 per child. Write a function rule that relates the total cost of the party to the number of children n.

f(n) = 60 + 4n

f(n) = 4 + 60n

f(n) = 4n – 55

f(n) = 4 – 55n