Question

Jayne has a home-based business putting on children’s parties. She charges $60 to design the party and then $10.00 per child. Write a function rule that relates the total cost of the party to the number of children n.
A f(n) = 10 – 55n
B f(n) = 60 + 10n
C f(n) = 10 + 60n
D f(n) = 10n – 55

Answer 1

She charges $60 to design the party
So we know we need to add 60. So 60 + 

then $10.00 per child
10 dollars per child mean 10 times # of children so we have:
10n

Put it all together:
60 + 10n
f(n) = 60 + 10n