Question

how do you write a function rule

Answer 1

Micheal has a home based business putting on childrens parties. He charges $25.00 to design the party and then $8.50 per child. Write a function rule that relates the total cost of the party to the number of children n.

Answer 2

the number of children is n.
Lets call the total cost of the party C.
Tell me in english, what would be the total cost of the party, for, say 5 children?

Answer 3

the total cost of the party for 5 would be 42.50 would you take 8.50 times 5?

Answer 4

right, but you forgot that he charges 25 dollars to design the party apart from charging each child 8.5

Answer 5

ok so then i would take 42.50 and add 25.00 and i would come up with 67.50

Answer 6

okay. good.
so what would your equation look like for 5 children?
total cost = ?

Answer 7

im not sure

Answer 8

how did you get 67.5? just work backwards.
you added 25 dollar design charge to the charge for 5 children.

Answer 9

so would it be 25 + 8.50

Answer 10

charge for one child is 8.5. charge for 5 children is?

Answer 11

ok i think i got it now so my equation would be 8.5 x 5 +25.00

Answer 12

okay good.
so for 5 children, total cost is 8.5 x 5 +25.00.
so for n children, the total cost is?