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Mathematics 18 Online
OpenStudy (anonymous):

how do you write a function rule

OpenStudy (anonymous):

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.

OpenStudy (anonymous):

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?

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

OpenStudy (anonymous):

im not sure

OpenStudy (anonymous):

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

OpenStudy (anonymous):

so would it be 25 + 8.50

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

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