Question

Plz help! Due tonight!

Recycled​ CDs, Incorporated, offers a choice of 5 used CDs for ​$20​, with each additional CD costing ​$6. Write a cost function for purchasing 5 or more CDs. What will the cost of buying 9 CDs​ be? Let x represent the number of CDs over 5.

Answer 1

20 + 6x

$44

Explanation:

So 5 CD's for 20 dollars is $4 ea. then each one added will be +6 with the variable (x).

so you can't have the first 5 becuase x is used for every one OVER 5.

So

$ or price = 20 + 6x

plug 4 in because 9-5 = 4

20 + 6(4)

20 + 24

$44

Answer 2

the answer will be

48$ dollars