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Recycled CDs, Incorporated, offers a choice of 5 used CDs for $20, which each additional CD costing $4. Write a cost function for purchasing 5 or more cds. What will the cost of buying 13 CDs be? Let x represent the number of CDs over 5.

C(x) = ____

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ayfat23

The The  cost of buying 5 CDs will be $52.

Since  $2 represents the cost of  the 5 used CDs

How can the cost of buying 13 CDs be calculated?

We can generate a formular which is [tex](20+4X)[/tex]

Let Y  be  the amount of extra CDs  that is been purchased.

Then the value of X will be the  number CDs minus 5 , since the first 5 are the used CDs bundled into the $20 group.

Then the equation can be set as

20+4(13-5)

2+4(8)

20+32

52.

6 CDs would cost $30

Read more about costing method at ;

https://brainly.com/question/329739

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