SOLUTION:  A store sells packages of comic books with a poster. A poster and 4 comics cost ​$9.99. A poster and 12 comics cost ​$17.99. Write a linear function rule that models the cos

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Question 1208883:  A store sells packages of comic books with a poster. A poster and 4 comics cost ​$9.99. A poster and 12 comics cost ​$17.99. Write a linear function rule that models the cost y of a package containing any number x of comic books.
Found 2 solutions by mccravyedwin, Edwin McCravy:
Answer by mccravyedwin(407)   (Show Source): You can put this solution on YOUR website!

A store sells packages of comic books with a poster. A poster and 4 comics cost
​$9.99. 



A poster and 12 comics cost ​$17.99. 



Solve the system:



Solve that system and get p = $5.99 and c = $1.00

So, a linear function rule that models the cost y of a package containing any
number x of comic books is

  (You can omit the 1.00)



Edwin
Answer by Edwin McCravy(20055)   (Show Source): You can put this solution on YOUR website!

Or you can just figure in your head that since 8 more comic books 
costs $8 more, each comic book costs $1, so a poster is $4 less 
than $9.99 or $5.99.

So y = 1x+5.99  or y = x+5.99

Edwin
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