Question

please answer this question​

Answer 1

Answer:

Let the number of CDs be x.

Store A has a fixed charge of $104 and will charge $2x for x CDs. The total cost is $(104+2x).

For x CDs apart from the 12 free CDs, Store B will charge $10x.

We want to find when the two costs are equal. This is found as follows.

104+2x=10x2x−10x=−104x=−104−8x=13

Thus, if 13 CDs are bought, the costs will be the same.

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